The eight greatest non-human Twitter users

4: Ghost of Peter

URL: @ghostofpeter
Type: Dead cat
Typical tweet: "Sooo much to do on this crystal-clear night: look at stars, look in windows at family, imagine being under the covers with them."

Unless you're a gimp, you know damn well that your dead cats come back to haunt you. Peter is just such a cat, but, rather than simply appearing as a silvery ghost at night, he prefers to tweet to his owners and friends. Death: thanks to Twitter, it ain't that lonely.

3: South West Trains

URL: @southwesttrains
Type: Angry train
Typical tweet: "Had some good rail fail this morning... Skipped a few stations to make up for it. I don't think anyone noticed."

The South West Trains bio states this account is run by a very spiteful commuter, but we all know better: the tardy spirit of one of London's busiest train networks has learned to tweet, and reminds all London commuters that they are not alone in their anger over late trains and cancellations.