I don't know if anybody here uses http://www.google.com/ig, but I just finished porting my popular widget miniMail as a Google module. It's a little PHP ditty which allows you to send emails without any configuration required. Check it out here: http://digg.com/links/Send_emails_via_Google_Personalized_Homepage. Please reply with feedback, as I'd love to work on improvements! Its homepage is here, and the original Dashboard widget is here.