How about visiting this site. This is where I got some of my Seo knowledge. The Death of Meta Tags The author is Danny Sullivan, one of those behind the Matt Cutts Blog Hacked.
ITS NOT TRUE! SO UNLEARN IT! Okay.. that was someones OPINION in 2002! (Notice he says "in my opinion") Another SEW Editor, Elisabeth Osmeloski, DISAGREES with that.
It can be true that big search engines do not make a big deal out of meta keywords, but to be safe just include it. Anyway whatever keywords you use in the title tag can still be used in the meta keywords tag.