It's here at last - out-of-the-box GMail functionality to have multiple signatures. If like you me, you run a number of different e-mail addresses in Google for different things, and you wanted to have a separate signature for each of them, previously you had to use a GreaseMonkey script, browser plug-in, canned responses or something along those lines. However, I logged in today, to see under Settings > General under the signature section, you can now specify a different signature for each e-mail address that you have - as well as using colors and fonts that you wanted. Now if they could only be put at the bottom of my e-mail text, rather than the bottom of the message as a whole ;-)