
The second is based in the USA, created by the Oregon Library Association's Library Instruction Roundtable and at is at http://instructionwiki.org/Main_Page. It is "a collaboratively developed resource for librarians involved with or interested in [library] instruction ... The Library Instruction Wiki was designed to help librarians learn from one another. Use the wiki to find handouts, tutorials, suggested reading, and more!"
At the moment the latter has more content than the former, but the type of content differs. Infoteach also has a discussion board section. I think the scope implied by the statements quoted above is slightly different - though part of the difference is in the terminology current in the USA vs. the UK. For example in the UK the word "instruction" is one you would avoid, as it implies transmissive teaching (bad, bad, bad...) whereas in the US this word doesn't seem to be interpreted in the same negative way. Both wikis look useful - but future usefulness obviously depends on people contributing to the wikis. (I'm afraid I haven't contributed to either yet...)
(Photo by S. Webber: Leaf on a bench in sunlight, Sheffield, Nov. 2005)