Yahoo has made some changes to its index and crawler behavior with some updates to their ranking algorithm and crawler frequency.
Priyank Garg posts on the Yahoo Search Blog --"We’re reducing our crawling machines by a significant amount with this update, so you might have observed a significant reduction in crawl load from us along with fewer machine IP addresses hitting you over the last few days."
The new crawler continues to improve comprehensiveness and freshness of coverage while also enhancing crawl efficiency, which reduces spurious load on websites.
Yahoo!, Search, Web Search, Search Engine, Yahoo Search, Yahoo index, Yahoo Crawlwer, Crawler, Frequency, Ranking
Source:? SEJ Blog