I confess I am new to both the number 1 and number 2, both Irish: Cedar Lounge and Splintered Sunrise, and have to say I am very unimpressed by Splintered Sunrise, with its snide attacks on the "decent left" - although I liked this post on the SWP and Che. There were several others I hadn't heard of, and among those I liked The Scottish Patient, Madam Miaow says, Consider Phlebas and My Random Thorghts.
Some of my favourites are there, including Dave's Part, Shiraz Socialists, Ian Bone, The Early Days of a Better Nation, Three Score Years and Ten, The Soul of Man Under Socialism, The Daily (Maybe), Hak Mao, Gauche, A Cloud in Trousers, The Bristol Blogger, the Popinjays, General Theory, Modernity, and Kathedar.
And there are some that I haven't visited for a while - like KitNotes, Reasons to be Impossible, From Despair to Where?, Whatever Happened to Leon Trotsky? - that I'll have a better look at.
I was suprised not to see Scottish Co-operative Wholesale Republic, Inveresk Street Ingrate, Virtual Stoa, Shuggy's Blog, Never Trust a Hippy and The Poor Mouth.
Meanwhile, you can also check out the Torygraph's bizarre list of influential leftists (left meaning Labour Party, with one or two exceptions), or Iain Dale's list of 100 left of centre bloggers, which I'm pleased to see includes Baggage Reclaim.