The Piece of News is known for several years but some webmasters of the previous Century continue to fill the Meta Keywords tag with a Keywords Salad. Amazing ! What I’m going to said is true. I see every day a lot of Websites which use Meta Keywords in every page. That’s totally useless. Google, MSN and Yahoo refuse to consider the Meta Keywords tag (ok, Altavista still consider it…lol). Thus, the best advise I can give to you is : « work hardly your content my child and forget the old tips ».
However, the Meta « Title » is very important and Meta Description is not more the most important decisive Factor, especially if it is the same on every page of your Website. But if you can do a dynamic Meta Description, it can be interesting. ;)