For fun I'm going to try this. Google has a new service that lets you create your own search engine. As an example. .NET web developers will find http://www.searchdotnet.com/ useful as it only returns authoritative Microsoft sources. MSDN, microsoft.com, MS blogs, etc. I've added that to my custom Google homepage.

So what should I create a search engine for? How about poker - a search engine that will search only the top poker blogs nd ignore the ads and such?

Check http://www.google.com/coop/cse?cx=007309252445351814162%3Aym0xcd0ajbk in a little bit to see how that goes. :)