After some perhaps 'misplaced' disclosures from a few people, the Psychoville 'Twibbon' (cause app for Twitter) was created - mostly as something fun to show support for a second series. As interest grew, the petition was posted to provide an organised outlet for fans of the series to be heard, regardless of whether or not the series was given the 'green light'. In the end, it all boils down to money and ratings, and we are all well aware of that fact.
Also, several involved with the show know of the petition, and as someone who shall remain nameless said: "...we all think it's well and good that people who like the show say and do whatever they like to spur the BBC to make a second series...."
So while, yes, commission talks are coming within the next 2 weeks or so - and they may very well bag another series - a little push from the fans is welcome. Why not make it easier for the BBC to see what the fans think? Sure, there are forums and comments on articles, blogs, etc. -- But what's the harm in having it all right in one spot, nice and neatly compiled? *shrug*
