Tom Holden:
We do now offer online sign-up though at:
http://donate.wikimedia.org.uk/index.php?option=com_civicrm&view=Contrib...
You might want to link to this a little more prominently on the Membership page. Currently it says "Please print the application form provided on the right and post back to the address on the form", which is likely to put people off before they notice the "online form" at the top of the page.
Also, is there any reason not to accept POs as well as cheques for postal applications?
- river.