Honestly, I don't know that online fan presence has much to do with casting other than, if it was down to two people for a role, and one had a huge fan following, then *Maybe* that person gets the part.
I appreciated his thoughts on Caprica and I agree with him. I think I watched two episodes before giving up. I felt it either didn't connect to BSG or was screwing up continuity more than I could stand.
I'm curious too about your Fat Lee thoughts. I can't say I was a fan of the arc, though that had more to do with the execution of it then actually making Lee heavy for several episodes. But I never hated the story choice as many did. And I have to say Jamie's remarks on why they went in that direction - including why Rymer thought it was a good idea - helped make it all a little better for me. I still have some issues with how it played out once filmed (especially some of Adama's remarks to his son), but I get the choice better now.