Index bloat occurs when search engines index low-value or duplicate pages, which dilutes a site's crawl budget and authority. For affiliate sites, this often includes thin content, duplicate product pages, or tag archives. When search engines waste resources indexing non-essential pages, they may overlook higher-value content, reducing visibility for money pages. Additionally, excessive low-quality pages can harm a site's overall trust and ranking. To avoid this, affiliate marketers should use noindex tags on low-value pages, manage pagination, and consolidate duplicate content. A clean, focused index ensures search engines prioritize important pages, improving rankings, traffic, and ultimately, conversions in affiliate marketing efforts.