Always do your best to have a good call to action,
no matter what you do on or offline.

You always get more when you ask for something than when you ask for nothing.

It's also a good idea to ask for something you want, because you might get it..

I am not advicing people to have links in their About Me.
I am advicing them that if they have a link there: Make it clickable

Click here now works much better than: http://bit.ly/16YBen2

And one thing that many people don't know:
After the topdomain/ like .com/ or .net/ etc E and e is not the same.

Leaving it to your visitor to type your url is then a big mistake. :)