ralent - 2:39 pm on Sep 19, 2008 (gmt 0) AWA is right on the money in my opinion.
I've been in this for the last 4 years and all I can say is don't quit your day job, if you have one. The market is very saturated and keyword prices continue to rise. Keep affiliate marketing as a part-time venture and your expectations modest. If you get lucky, and you may, thats great but don't plan on it.
AWA is right on the money in my opinion.