How to take part

First you will need to follow TwPhCh on Twitter. This is where the challenges will be announced.

Secondly you will need to join the flickr group. This will require a flickr account (free) and once this is set up you can use the flickr login link above to gain voting access here.

All that you need to do now is to upload images tagged #TwPhCh to the group based on the current challenge. From friday 18:00 to sunday 21:00 you will be able to come here and vote for 5 photos from that weeks challenge.

We encourage you to browse everyones photos in the group and to participate both in the forums and by commenting on the photos themselves.