I do the "hang out on the left side of right turn lanes" thing sometimes. Depends on the intersection. One intersection on my route has only one lane but about 80% of the cars turn right there. Hanging out on the far left of the only lane means many cars can turn right while I'm waiting for the red. If I hang out on the right near the fog line, people go around me and turn right in front of me, and more than once I've had one more try to sneak past me as I take off, nearly resulting in a right hook.

I generally tend towards the right side of the straight through lane, because around here I have never seen someone take the right only lane and then go straight, and by being in the right of the straight lane, people can make use of the right turn lane while the light is red, and when it turns, people going straight can pass me within the lane (the lanes are plenty wide for that here).