Lets say that you want to add a link to your signature like below Tell-A-Friend Here are the steps. 1. Click on "User CP" above 2. Click on "Edit Signature" on the top left 3. Type "Tell-A-Friend" on the signature box. 4. Select the text "Tell-A-Friend" 5. Click on icon 6. It will popup a box to add the URL (site address). Type the URL(address) to any page "within IL" and say ok. 7. Click "Save Signature" and you are done! Also, refer "how do I create link to an existing message in IL?" PS: Do not add links to external sites outside IL. It will be moderated as per our site policy.