This might be old news to most of you, but if you link to the intents page, twitter will popup a 'Follow' button that should make it more likely for people to actually follow you.
It is how the generated follow button work, but you can do it without having to load all their javascript.
Example:
If you click the second link you will see the Follow button popup.
I wouldnt recommend doing this everywhere, just in places where you normally would say follow me.