thank god for this Thread!
I have the same issues with apps running while I never use them. I use StumbleUpon, GMail, Angry Birds, Voice Memo and the Phone. I read and believe the "don't use TK's" threads but I still have ATK so I can see apps that are running (curiosity may yet kill this cat) and in case I need to do a battery pull.
I've never opened Skype but it's running currently (according to my ATK list) along with My Verizon Mobile (which I killed a minute ago).
Should I be worried that apps appear to open and stay open all by their selves? Themselves. Theirselves. I don't know what word to use. Hmmm...
I am guessing that I need to just chill and only close apps if they appear to be zapping my battery.
-DK-