patthomson.wordpress.com - A nice simple explanation of how to come up with (and not come up with) research questions for a thesis. Distilled from Trowler's book (available cheaply at http://www.amazon.co.uk/Doctoral-Research-Higher-Education-ebook/dp/B007W57J5K )

landing.athabascau.ca - My article proposing (only very slightly tongue-in-cheek) a massive open online PhD. It goes into some detail about ways this could be done, and the issues that might prevent it from happening. I wrote the article as an exercise to see whether the...

http://thedailyphd.com/# - A useful site that aggregates a lot of news and information about PhDs, the PhD process and related issues.