Tweetstats
I came across Tweetstats from new Twitter follower @hjortur. Tweetstats provide you with some stats that reflect your Twitter usage from day one, the day you sign up for Twitter. (my results)
It aggregates the number of Tweets from when you signed up to present day, and gives you stats on how many tweets you've posted each month, how many tweets each day, at what time of day you tweet the most, the people that have @'ed you the most and the most common interfaces you use to tweet. Phew, that's a lot of info!
Seems like I was at my peek Twitter usage in September '07.
On average I tweet the same amount each day, except for on Sunday, I take a Twitter break.
I tweet the most just after lunch. 
I am Joec0914 #1 fan ;)
I use the Twitterrific application the most to post tweets.
Isn't that who you send an @reply to? And not who sends it to you?
It's so cool, I've already got it on my blog too, thanks for pointing it out!
Posted by: Gary LaPointe | April 06, 2008 at 11:01 PM
Oh my, I need a moment. I'm a little verklempt.
Posted by: Joe Cascio (@joec0914) | April 07, 2008 at 12:29 AM