Adding Facebook, Twitter and Linkedin to your Email signature.
One of the services I have found really valuable, and this is not a paid plug! Is Wise Stamp. You basically create a signature with all your links and it easily places them along with icons into the footer of your emails either automatically or as you choose.
This is a great way to get more followers over time and make your email more effective. You can find this little gem at: http://www.wisestamp.com (Note, you can also use it as a PLUGIN on Mozilla and Chrome... very easy to install, just choose Tools/Add Ons/Get Add Ons/ & Search for WiseStamp) Check out a screenshot of how it looks in the email:
