Twitter-icon.com has a great selection of twitter icons and buttons.
Site: hamm-chemie.de (Hamm-Chemie-Hauptseite)
Hamm's Chemie-Seite: für Schülerinnen und Schüler mit Interesse am Chemieunterricht, für Kolleginnen und Kollegen, zur Informationsbeschaffung aus dem Internet.
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!