One of the three founders of twitter Evan Williams (@ev) says that London is the twitter capital for the second year  running.

He revealed this on Newsnight interviewed by Kirsty Wark.  I am a little astonished, as most of the people I meet on twitter are from the US!

I am often asked what is the point of twitter – and of course the answer is that it is just another marketing channel.  It is like going to a drinks party in real life – same etiquette applies – but it is online,  free and very popular.  If you stand in the corner not speaking to anyone it is not a very good party, if you jump up on a table and start shouting about your services you will find people migrate to another room.  If you walk in to twitter pleased to be there and find good people to talk to, and engage in conversation – it can be great.

Watch the interview as Evan Williams answers questions about why famous people are on twitter (and how do we know who they are), whether twitter replaces journalism, and whether it dehumanises people.  Kirsty was working hard.

Note you can follow Newsnight on twitter

Here is the interview and more information and background courtesy of Techcrunch the well-known leader of blogs for all things technical.