https://digitarius.com.tr/en/blog The Digitarius Journal: practical writing on Google and Meta advertising, SEO, and visibility inside AI answer engines (GEO). en Mon, 17 Aug 2026 11:05:44 GMT https://digitarius.com.tr/en/blog/why-roas-drops-seven-causes-and-a-diagnostic-order https://digitarius.com.tr/en/blog/why-roas-drops-seven-causes-and-a-diagnostic-order When ROAS falls after a budget increase, sometimes it is simple arithmetic and sometimes it is a broken account. Here is a diagnostic order that separates the two. Thu, 13 Aug 2026 07:46:30 GMT Performance Marketing https://digitarius.com.tr/en/blog/what-is-geo-how-it-differs-from-seo https://digitarius.com.tr/en/blog/what-is-geo-how-it-differs-from-seo Getting cited by ChatGPT, Gemini and Perplexity is a different game from ranking. Concrete steps on citability, source authority and structured data. Mon, 10 Aug 2026 10:42:10 GMT GEO