As part of the new year's housekeeping I've checked through my links. There were a couple of expired links which I've now deleted. Some of the links are still working but the site to which they link appears to be inactive so I've indicated this where applicable. I've also added some links which had previously been overlooked.
As always, I link to these sites as they all add something to the ongoing discussion. Clearly, given the diametrically opposite opinions of many of the sites, my linking to a site does not indicate my agreement with the opinions of the author(s) of the site.
Please feel free to suggest other relevant sites to which you think I should provide a link. If you run a site I've linked to and would rather I didn't, please let me know. I'm not promising to remove the link but will consider your arguments based on their merits before making my decision.
POST EDIT: In updating my links, I've noted that a number of the links on AZU are either inactive or dead. C'mon SC, you need to lift your game and keep your site up to date.