Share your experience!
care to elaborate?
if you are referring as sharing with Xperia with facebook or Xperia with Twitter its just another way to share pictures, vids, etc and it will say Xperia, but you don't quite need to use it, you can use the regular facebook and/or twitter, you should have all 4 options.
Don't forget to give Kudos
you can not, Xperia phones are Facebook and Twitter integrated, that option will be there unless you root but it will be tricky to uninstall them.
Don't forget the Kudos