Twitter-icon.com has a great selection of twitter icons and buttons.
Site: lilly.ca (Welcome to Lilly)
Lilly employs more than 41,000 people worldwide and we market our medicines in 158 countries. As our company touches the lives of people worldwide, we recognize that we have a responsibility to be a good corporate citizen in our communities.
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
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Choose great twitter icon for you website!