Twitter-icon.com has a great selection of twitter icons and buttons.
Site: m-kh.info (Masood Khosroshahy)
Home of Masood Khosroshahy on the WWW: Showcasing some of the projects in network technologies, including ADSL, DSL, xDSL, WiMax, WiFi, IEEE 802.11, IEEE 802.16 and IMS among others.
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!