Originally Posted by Flimflam

If there's any chance they'll make a right turn anywhere, or there are cars coming into the curb lane from a side street - split the lane between cars, saves you right hook/door/car turning problems. Do so at your own risk, of course - conditions here in Toronto often dictate that splitting the lanes like this is pretty safe behaviour, and allows everyone on the road to go about their business without any "let's wait for the 5 bikes in the bike lane to go straight while I try to make this right turn" situations.

Some situations, if traffic clears out with a light cycle or something, make taking the lane and waiting a more appropriate situation - personally in my riding here, this is rarely ever the case and so I generally filter through on whichever side seems safer.