I would like to see any twitter apps free, because there aren't many good free ones out there.
I love to have a contact backup app or business card scanner. Any goods ones?
HootSuite is my iPhone Twitter app of choice. I use the desktop version too - which is what made me buy the iPhone version when they released it. It's fab! And if you're having any problems, their tech support are really good at getting back to you.
I'd like to see them give away some older titles that have maybe recently been updated. This will help keep thoughts of these games in circulation.
At this point, anything in a giveaway along the lines of productivity and casual games would be good for me.