I'm really encouraged by comments like yours, because that assures me there really is value to the program.

I'm not sure to what extent your suggestion should be formalized though... the main thing to consider is that this concept is so basic, so simple that even a brand-new member who knows nothing of Maemo or the devices could edit their signature and immediately start helping others find their way!

However I also want to motivate Greeters to grow into superusers of some sort, as well as offer a higher level of help if they feel so led. So IMO that should be little more than a suggestion on the Greeter page. But we'll see!