Twitter Counter is a really useful tool for measuring your Twitter stats – and, of course, there’s no charge to use the standard options. Twittercounter enables you to see your Twitter Followers, those you are Following and also your Tweets in a graph format. There’s a useful free profile checker and a widget you can download for your blog. If you fancy giving your Follower numbers a boost, then you can pay to be a Featured User. There are further paid evaluation options available too from $15 a month.