Sounds like a lot to me, but it's not even in the ballpark to be considered a heavy Twitter user.
According to this piece, 80% of tweets are done by 10% of Twitters users. The president, for instance, has tweeted 41,000 times and has been on Twitter about as long as I have. Former sportscaster (and radio talk show host) Bruce Wolf has tweeted 72,000 times. Local Chicago journalist Robert Loerzel (who is a great follow by the way) has tweeted 372,000 times.
Just explaining why your Twitter feed may be dominated by a few people. If it's dominated by me, you don't follow any heavy Twitter users.
