The search results depend upon many factors including related to your own sites as well as to other sites in each of the quick searches. The search results are continuing to grow and we are seeing continued changes within the search results.
It is important to ensure we are crawling the "best pages" your site has to offer ? we encourage you to use a sitemap file to help us understand which paths you would prefer us to crawl. In addition, in many video related sites, to get better results in our Search.xxx service. Please ensure that there are text descriptions of the videos related to the Quick Search topics. If you are making changes to your site please let us know and we can try and expedite a re-crawl of the site.