Guido is supporting #PositiveTwitterDay today. Twitter, especially the political Twittersphere can be a horrible nasty place, well today Guido will do his Christian best to be nice to all in his tweets. The idea comes from the invariably polite Sunder Katwala.

Friday sees our civic attempt at a civil #positivetwitterday (if you’re commenting on Thursday night in the USA, you may have a few hours!)

— Sunder Katwala (@sundersays) August 30, 2012

A number of well known Twitter curmudgeons have already re-tweeted the hashtag #PositiveTwitterDay and entered into the spirit of the day. Guido for his part is determined to have civil, positive discussions today with the likes of Polly or Mehdi. The power of positive tweeting…