I am a faithful GMAIL user for over a year since the fantastic 'archive' feature and the searching of any email has become so great, but I have always hated the need to cut/paste my signature file as it would always appear at the bottom of the message thread (something they never did get around to fixing).
Along comes the IMAP feature and I am now back to using Outlook through GMAIL.. not sure if going 'back' to Outlook is always something to be proud of, but it is nice to see (a Google product) doing their part in communicating with (a Microsoft product) so much better.
On the note of archiving however, since there isn't an 'archive' button within Outlook, I believe by moving your message to 'all mail' within the GMAIL folder should retain the message as an archive.
