Twitter-icon.com has a great selection of twitter icons and buttons.
Site: ucmp.berkeley.edu (UCMP - University of California Museum of Paleontology)
Hosting company: University of California
Tags: Frequently Asked Questions, National Geographic, Bay Area, Life Sciences, Research Center, Global Warming, Graduate Students, Scientific Community, Learned Society
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!