Twitterfountain: This application combines tweets and Flickr images that have the same metatags (keywords).
That leads to the whole system beginning to fail, in much the same way that keywords and metatags stopped working so well due to the misuse of popular tags like "sex" on many websites.
Yahoo still uses meta tags, so spend some time filling out the description and keyword metatags with content that is well written and accurately reflects the content of the web page.