What it is: You’re probably familiar with Groupon’s daily deals. The widget shows the latest ones in a 2-by-1 space on the home screen.
Why it’s a good widget: If you find Groupon’s daily e-mails too intrusive or too easy to forget about, the widget will keep you in the loop with no effort on your part. (But make sure to turn notifications off within the app’s settings unless you want to be pestered once a day.) [Free, Link]