I wonder what caused the surge of all those 5-stars positive reviews within the last 24 hours....
Hola's marketing team at work.
Tons of articles being written about it? I hate to say this, but because of Google+ it is pretty easy to see if users are legitimate or not. And from what I could tell many in those reviews are legitimate users (at least on G+).
The "bad guys" can rate things too :)
It's almost like they had a giant network they could use for fake reviews.