I read the following:
Formula1.com – Ditto to you
F1Fanatic.co.uk: best website around, great articles etc.
Autosport.co.uk/f1: to get good, credible info
BBC.co.uk/f1: UK based it is brilliant, great articles, videos etc, plus you can rewatch grand prix.
f1technical.net: just for the technical blog it is pretty comprehensive.
jamesallenonf1.com: good stories posted, and some interesting videos on there.
finallt the Guardian and Telegraph website, but that is usually when DC does a story or just after a GP, they dont run many other stories other than GP reviews etc