Twitter-icon.com has a great selection of twitter icons and buttons.
Site: adform.net (Media Planning | Ad Serving | Web Analytics | Reporting - Adform)
Adform - online marketing platform for media planning, ad serving, web analytics, and reporting for online advertisers and media agencies. Adform empowers media agencies, marketers to cooperate and profit from their online marketing investments.
Do you have a twitter account? If so it's important
to get as many people as possible to follow you.
Great follow me icon captures attention of the visitors
and brings more followers to your twitter account.
Choose great twitter icon for you website!