This is a multipurpose general information site. If you submit your site to Yahoo they look at it and decide how to list it.
Search engines work more automatically, without human intervention.
This site translates various languages, which can be a help when using search engines. Ask whatever you want. This site is a good overall market research starting point. Don't overlook the U.S. census for free data. Cyberatlas is a detailed resource page for web marketing.