~90wpm is my calculated average over about 6 months... occasionally I can hit a high peak of 130 to 140, but only if I've memorized what I'm typing beforehand.
The best way to improve typing skills is to just use the computer, nothing more.
When I saw some of the top scores though, I thought jesus... I thought I was fast, with an average of 90.. then I see dozens of scores upwards of 150, 180... good god. That's faster then people can THINK!