Also, since xmarks told me that those links were well ranked in the "hiring" category, you could look at other links from there:
http://www.xmarks.com/topic/hiring
Just stumbled on these links while reading http://news.ycombinator.com/item?id=1253411 . While not strictly about interviewing, they might be of interest to you in your quest for developers:
http://www.joelonsoftware.com/articles/FindingGreatDeveloper...
http://stu.mp/2010/03/howto-recruit-rock-stars.html
http://stackoverflow.com/questions/1451216/how-to-recruit-gr...