I have been making one too here it is :
http://www.cumsh.com it's an adult videos search engine
Actually the purpose of this site was too demonstrate what I have been working on these last couple of months (in order to eventually sell it): a huge database of adult video clips
My database contains about 600.000 videos (a little more and still growing).
My records are organized that way :
clip title | thumbbnail | clip details / description | tags (some keywords related to the clip)| link to videos | name of host | video length | rating | category | date added | language | direct download link
I am looking for buyers interested by this kind of unique database...so, don't hesitate if interested