apps
No it doesn't. iMesh does not support Ipod touch/Iphones.
that comes with ipod touch 4g
Yes, the iPad supports iPod touch games.
No. They are different. The iPod touch 4 screen has more pixels so the iPod touch 3 won't support it.
Facetime doesn't yet support conference calling
you cant
iPod Touch, iPod Classic, and iPod nano (3rd generation and later) support Cover Flow.
http://ipodtouchtricks.net/ipod-touch-tricks/voip-support-on-ipod-touch-2g-confirmed/ according to this site i guess you can
The iPod Touch does not support proprietary formats such as WMA. Such files will need to be converted to standard MP3s to use on an iPod.
You can always turn tracking off in the iPod Touch settings. People shouldn't be able to track your iPod Touch anyways.
An estimated 30 million people own an iPod Touch worldwide.
iMessage is on iOS 5 and the iPod touch first and second generations can't support it.