https://korzaro.com/en/blog/ Practical decisions for owners of growing online stores. en https://korzaro.com/en/blog/revenue-customer-concentration/ https://korzaro.com/en/blog/revenue-customer-concentration/ Wed, 23 Sep 2026 08:00:00 +0200 Customers How to measure how much revenue a small group of customers carries, when that is a strength and when a risk, and why next year’s plan should not rely on it. https://korzaro.com/en/blog/ads-to-unavailable-products/ https://korzaro.com/en/blog/ads-to-unavailable-products/ Mon, 21 Sep 2026 09:00:00 +0200 Marketing Find ads that lead to unavailable products and decide when to pause, repair or redirect them to a genuinely relevant alternative. https://korzaro.com/en/blog/competitors-what-to-watch/ https://korzaro.com/en/blog/competitors-what-to-watch/ Fri, 18 Sep 2026 08:00:00 +0200 Store and content Which competitor moves can change your customer’s choice, what public data cannot tell you, and when the best response is no response. https://korzaro.com/en/blog/healthy-stock-next-purchase/ https://korzaro.com/en/blog/healthy-stock-next-purchase/ Wed, 16 Sep 2026 08:00:00 +0200 Stock A practical inventory decision framework using sales velocity, availability, lead time, margin and the cash already tied up in stock. https://korzaro.com/en/blog/understandable-to-search-and-ai/ https://korzaro.com/en/blog/understandable-to-search-and-ai/ Fri, 11 Sep 2026 08:00:00 +0200 Store and content What actually helps search engines and AI assistants understand an online store’s products: complete answers, consistent facts and crawler access – without promises markup cannot keep. https://korzaro.com/en/blog/from-first-purchase-to-second/ https://korzaro.com/en/blog/from-first-purchase-to-second/ Wed, 09 Sep 2026 08:00:00 +0200 Customers Learn how to time a useful post-purchase contact, measure second orders with mature cohorts and avoid claiming an effect your data cannot prove. https://korzaro.com/en/blog/seo-ppc-email-one-store/ https://korzaro.com/en/blog/seo-ppc-email-one-store/ Fri, 04 Sep 2026 08:00:00 +0200 Marketing How to choose one commercial priority with real demand, stock and margin, and give SEO, PPC and email distinct roles with the same offer and landing page. https://korzaro.com/en/blog/five-questions-for-your-agency/ https://korzaro.com/en/blog/five-questions-for-your-agency/ Wed, 02 Sep 2026 08:00:00 +0200 Measurement How to run an agency meeting that ends in a decision: what changed, why, the effect on margin, what will change and how you will check it. https://korzaro.com/en/blog/invite-next-purchase-without-chasing/ https://korzaro.com/en/blog/invite-next-purchase-without-chasing/ Fri, 28 Aug 2026 08:00:00 +0200 Customers When and how often to remind repeat customers about their next purchase, what Czech law lets you send without consent, and how a control group shows whether reminders work. https://korzaro.com/en/blog/discount-is-not-a-strategy/ https://korzaro.com/en/blog/discount-is-not-a-strategy/ Wed, 26 Aug 2026 08:00:00 +0200 Profit and margin Why a revenue spike after a promotion does not prove profit, how much extra volume a discount needs, and how to decide whether to repeat, narrow or stop it. https://korzaro.com/en/blog/broad-assortment-or-weak-items/ https://korzaro.com/en/blog/broad-assortment-or-weak-items/ Fri, 21 Aug 2026 08:00:00 +0200 Stock How to tell which parts of your range attract and complete purchases and which only tie up cash – and why to judge groups, not single items. https://korzaro.com/en/blog/shoptet-analytics-ads-disagree/ https://korzaro.com/en/blog/shoptet-analytics-ads-disagree/ Wed, 19 Aug 2026 08:00:00 +0200 Measurement Why Shoptet, Google Analytics, Google Ads, Meta and Sklik report different orders and revenue, and how to pick the right source for each business question. https://korzaro.com/en/blog/fresh-data-or-outage/ https://korzaro.com/en/blog/fresh-data-or-outage/ Fri, 14 Aug 2026 08:00:00 +0200 Measurement Why the latest days in GA4, Google Ads, Search Console and Meta look worse than they will end up, and how to check data completeness before a dip changes your budget. https://korzaro.com/en/blog/product-feed-comparison-sites/ https://korzaro.com/en/blog/product-feed-comparison-sites/ Wed, 12 Aug 2026 08:00:00 +0200 Store and content How to separate critical feed errors from warnings, rank fixes by commercial impact and confirm that Heureka, Zboží.cz and Google have actually accepted them. https://korzaro.com/en/blog/channels-claim-the-same-order/ https://korzaro.com/en/blog/channels-claim-the-same-order/ Fri, 07 Aug 2026 08:00:00 +0200 Marketing Why revenue credited by Google Ads, Meta, Sklik and email cannot be added up, and how to set the budget from store totals and controlled tests. https://korzaro.com/en/blog/revenue-growth-vs-profit/ https://korzaro.com/en/blog/revenue-growth-vs-profit/ Wed, 05 Aug 2026 08:00:00 +0200 Profit and margin How to split revenue growth into volume, price, product mix and the cost of winning each sale, and decide whether to accelerate growth or fix it first. https://korzaro.com/en/blog/bestsellers-while-available/ https://korzaro.com/en/blog/bestsellers-while-available/ Fri, 31 Jul 2026 08:00:00 +0200 Stock How to estimate the margin lost to repeated stock-outs on your best-selling products and weigh it against the cost of extra stock. https://korzaro.com/en/blog/profit-on-paper-little-cash/ https://korzaro.com/en/blog/profit-on-paper-little-cash/ Tue, 28 Jul 2026 08:00:00 +0200 Profit and margin Why a growing online store shows a profit but has little cash: where money waits in stock, payments and VAT, and how to find the delay worth shortening first. https://korzaro.com/en/blog/reviews-beyond-star-rating/ https://korzaro.com/en/blog/reviews-beyond-star-rating/ Fri, 24 Jul 2026 08:00:00 +0200 Store and content How to separate a one-off complaint from a recurring problem in Heureka, Google and on-site reviews, and fix the operational cause before polishing the reply. https://korzaro.com/en/blog/when-registration-helps-sales/ https://korzaro.com/en/blog/when-registration-helps-sales/ Tue, 21 Jul 2026 08:00:00 +0200 Customers Why not to force customers to register, when and how to offer an account, what benefit to promise, and why registered customers buying more often does not prove registration works. https://korzaro.com/en/blog/landing-page-keeps-ad-promise/ https://korzaro.com/en/blog/landing-page-keeps-ad-promise/ Fri, 17 Jul 2026 08:00:00 +0200 Marketing How to compare an ad's promise, the evidence on the landing page and the customer's next step side by side, and fix the mismatch that costs the most. https://korzaro.com/en/blog/what-to-know-every-monday/ https://korzaro.com/en/blog/what-to-know-every-monday/ Tue, 14 Jul 2026 08:00:00 +0200 Measurement A short Monday agenda for online store owners: profit, cash, active risks, a check on last week's decisions and no more than three new actions. https://korzaro.com/en/blog/reorder-point-without-spreadsheets/ https://korzaro.com/en/blog/reorder-point-without-spreadsheets/ Fri, 10 Jul 2026 08:00:00 +0200 Stock How to set a reorder point from sales pace, lead time and variability, what extra certainty costs, and when not to calculate one. https://korzaro.com/en/blog/order-is-not-revenue/ https://korzaro.com/en/blog/order-is-not-revenue/ Tue, 07 Jul 2026 08:00:00 +0200 Profit and margin Cancellations, unpaid and uncollected orders and returns can reverse the ranking of products, channels and months. How to compare completed value. https://korzaro.com/en/blog/content-that-helps-customers-decide/ https://korzaro.com/en/blog/content-that-helps-customers-decide/ Fri, 03 Jul 2026 08:00:00 +0200 Store and content How to find the questions your store leaves unanswered, write a useful guide for them and judge it by the reader’s next step rather than by traffic. https://korzaro.com/en/blog/growth-new-or-returning-customers/ https://korzaro.com/en/blog/growth-new-or-returning-customers/ Tue, 30 Jun 2026 08:00:00 +0200 Customers How to split revenue growth into new and returning customers, why the returning share does not measure loyalty, and how to decide whether reach, conversion or retention is the constraint. https://korzaro.com/en/blog/one-ad-number-is-not-enough/ https://korzaro.com/en/blog/one-ad-number-is-not-enough/ Fri, 26 Jun 2026 08:00:00 +0200 Marketing Why revenue credited by Google Ads, Meta and Sklik does not add up, and how to read the store’s blended cost of sale alongside each channel’s own figures. https://korzaro.com/en/blog/cash-tied-in-slow-stock/ https://korzaro.com/en/blog/cash-tied-in-slow-stock/ Tue, 23 Jun 2026 08:00:00 +0200 Stock How to measure the cash tied up in slow stock by age, tell missing demand from seasonality, and choose between holding, selling through and no longer buying. https://korzaro.com/en/blog/problem-or-normal-variation/ https://korzaro.com/en/blog/problem-or-normal-variation/ Fri, 19 Jun 2026 08:00:00 +0200 Measurement How to tell whether a drop in orders or conversion rate needs action or is ordinary fluctuation: comparable periods, a range built from your own history and a threshold for acting. https://korzaro.com/en/blog/what-remains-from-one-order/ https://korzaro.com/en/blog/what-remains-from-one-order/ Tue, 16 Jun 2026 08:00:00 +0200 Profit and margin How to take VAT, product cost, discounts, payment, shipping, packaging and advertising off an order and see which of your store’s orders do not pay.