Why cool: To be the best for the roughly 2/3rds (safe for work or not) of Internet content, searches people want to do, and content they want to find at best poorly served now.
Porn? No, not necessarily at all, or as I said, "safe for work or not".
Spam? No, not at all. Instead, as I said, searches people want to do and results they want to find, and those are nearly never spam.
Nothing tricky; take my description just the way I gave it.
The content types are primarily still images, recorded music, video clips, i.e., content types where search by keywords/phrases work from poor down to not at all due to far too little text in the content for matching users' keywords/phrases, and a major fraction of blogs and long tail Web sites, that is, where the content is mostly text.
A point is that search by keywords/phrases works well for only about 1/3rd of the content, searches people want to do, and results they want to find. My work is for the other 2/3rds. This description is difficult to understand?
Why cool: To be the best for the roughly 2/3rds (safe for work or not) of Internet content, searches people want to do, and content they want to find at best poorly served now.