Have you seen a drop in the requests of bandwidth from Slurp? (Slurp's Yahoo!'s indexing website crawler that visits websites and brings back the information to Yahoo!) Well not to worry, Yahhoo!'s recently done an update of the search engine crawler.
The engineers over at Yahoo! have worked their magic and programmed the new version of the crawler to take up 25% less on its bandwidth requests. They are also warning the SEO Community "With this change of behavior in the crawler, you may see some shuffling of the pages that are included in the index and some changes in ranking as well."
Yahoo! was running both their old version of the Slurp crawler and the new one at the same time up until July 28th, when they turned off the old version - so if you see significant changes in your website(s) on Yahoo!, sit tight and wait for things to shake out from this recent weather update.
Check out the Yahoo! Weather report on the Official Yahoo! Search Blog