@87insight: Generally speaking, the service names are setup as the word between www. and .com. For example:
www.profilactic.com would have the service name profilactic
www.digg.com = digg
I accomplish this via regex so that I don't have to update the plugin every time a new service needs to be added. But, it doesn't work perfectly because if there is a service that has a funky name del.icio.us, then the regex expressions would want to pull "icio". I've compensated for the common 'odd-named' services like delicious and lastfm, but certainly I've missed a few.
SO... how do you find the exact service names?
A: Go to your lifestream page and 'view source'. Search for <!-- Lifestream--> and look at the values of <li><a class=service name.... Save the favicon as this service name and place it in your profilactic\images directory.</a>
Google services are a little trickier so I'll probably have to create an exception for this. I won't have time to work on this for the next two weeks as I am traveling, but I will take a look in mid September.