This article says, "Many users live their lives in Gmail, all without ever recognizing its full potential. These widgets can help." I don't know about that, but I am a Gmail user, so I thought I'd at least take a look at these. It remains to be seen if I will use any, but maybe some of you would like to try one or more, so here is the link:

15 Add-Ons to Become a Gmail Power User