A couple of weeks back I raised a concern about Botnets being Controlled with Twitter.
Security of Opera Unite itself is quite dubious. Here is a recent dissection of Unite technology referred by a friend. The attacker will eventually have the option of using their own local Unite hosted sites and probably even a couple of other pawned ones.
Recent news about Twitter being used as a Botnet Command Center sounds so natural. At the risk of sounding like a second-guess, it appears like the most simple control path (barring only the frequent down times prone with Twitter service).
Couple that with the Opera Unite concepts and you have a good mobile threat vector. Yes, the Unite technology is also still being stabilized. But, that should not stop us from predicting some threat scenarios we are about to encounter in the near future (“near” as against the usual Science-Fiction measure of future).
I have similar feelings on Facebook, but have never had the patience to hover there long enough to give more thought.