It may have been better to put this in the Forum Feedback, But I guess nothing really fits the bill perfectly.
To make a Hidden Link or URL Behind Text (I dont know the correct term) try using the insert URL on Tom's Forums and then paste it into you Sig.EDIT - I have tested this method and it works 100% perfectly!
Just as an example I'll use Tom's Home Page:
Which should look like this: http://www.tomshardware.com/us/
Now look at the end of the URL where there is: ]
In between the ][
Type the text you want here[
So it will look like this Toms Hardware
Side Note - You can use the Test Posts section in the Forum Feedback @ the very bottom of Toms Forum Page.
**I am truly Sorry if this does not work as I am trying to test it now but my Sig is not showing up, I will update when I get it sorted out.**