Searh Engine Optimization (SEO) plays an very important role in promoting your site. Basically, SEO is a process in making current commerical search engine, like Google, to understand more about your portal's web page, so people can easily to look for your site based on their search query.
Currently, there are a few scopes that you HAVE to play attention to, making your page more much visible to search engine, driving more traffic to your site and utilmately monetize your traffic.
The following articles give you some hints that we have experienced in the past few year in doing some successful portal so far. And there are some rumors around the Internet that you may do or don't do, some are real, but some may cause you to be blocked from Google or future Yahoo! forever. You know they keep a blacklist for those who violates their rules.
Your first step - Choosing Right Keywords!