I have had a couple of people (quite justifiably) criticise me for not putting them in my blogroll. In essence I've never had a proper blogroll, the relevant section of the site having half a dozen sites that represented a half-hearted attempt to rectify this, plus a few where I'd come across new sites.
Back when I had a hundred readers a day nobody gave a damn whether I linked to them or not, but nowadays these things matter and so I consider myself suitably reprimanded.
I've added the main climate blogs I follow (in no particular order) and will add the political ones over the rest of the day. I've also set up a public Netvibes page (see navigation section) where you can see these sites as feeds.
If I've missed anyone out, do drop me a line.