Be aware that the LGPL still has some pitfalls in store here:

http://multinc.com/2009/08/24/compatibility-between-the-ipho...

An analysis of 2009 on the App Store is totally obsolete, knowing that the ToS change every couple of months.

Which AppStore? Isn't it already available on Google's AppStore?

iTunes App Store, GPL is incompatible so it was pulled by request, I've still got a copy on my iPad though.

I've downloaded VLC and XBMC when they were both available in the App Store, hod do I re-download? They dont appear in the "purchased" section

Ir they don't show I'm the purchased section they might be gone forever, I kept a backup of the IPA file.

Don't think so, considering the limitations as to how many devices you may download the application to. If i am not mistaken was it five.

There is no limit.

This limitation is gone.