If you were hanging on to your N900 because of skype, you now have an alternative.
Skype just released an android version for all android 2.1 phones (and maybe 2.2)

It works over 3g / wifi without extra costs besides data plan if applies.

www.skype.com

http://www.pcworld.com/article/20695...html?tk=hp_new

Downloading it right now on my galaxy s.

Edit : It indeed does not work on Galaxy S, But only with enclair 2.1, Luckily I have flashed a leaked 2.2 Rom. So It's working perfect.