+1, and perhaps even cars/peds too.

A lot of it is all about situational awareness a lot of the time. Coming down King St. W eastbound towards say, Atlantic, nice hill to gain speed on going under that bridge, but there are lights - if it's green, but there are 4 cars turning right - plan ahead and make sure it is, or will be clear for you to pass them on the left. This way you don't hold yourself up, you're not a danger to the right turners, and the left lane is still open for the streetcar and/or other traffic.

I've ridden down Adelaide in every lane at some point, but never sticking in the centre two lanes unless I have to be - if I turn left at John, I'll use the far left lane unless there are parked cars (because the two centres have those incomplete/old streetcar tracks, I don't like them ). It's all about a little forethough, having the awareness and being courteous to other road users. Don't treat others how you don't want to be treated. Sure, I curse and yell at people, but that's usually when they do stupid stuff - I was riding across Gerrard downtown last night and some cubevan thought it was OK to cut me off to pass a left turning car, even though I was in *my* bike lane, I definitely yelled, but that's as far as I went - I just want them to be aware as well as me.

On this same ride, I made a booboo myself, I didn't read the road properly and almost got caught up in the Bloor/Mt. Pleasant split on Jarvis - I'd never been there before, and had no idea until the split just came with the signs above the actual road split (not much notice, city planners!) but all was well and I merged over (I just stopped at the right curb until it was safe to pull left).

Good luck, we've a bunch of Toronto riders here - feel free to ask anything specific to local laws, but I think everything has mostly been covered. Police don't care about filtering from my experience, traffic sometimes does and you might get people squeezing you out (inching over and over). If the lights are red, I filter on whichever side is safer/more spacious - if I see someone trying to block me, I'll go to their left or if there's not enough room. If it's not safe at all, or I just don't want to (say there's only 2 cars in front) I'll stick behind them. I've done it many times, I've crept forward on a red anticipating a green right next to a police car, they don't seem to mind. I make sure I'm never holding traffic up unless I absolutely have to, which I think is the main gripe.

Don't let anyone tell you you're not supposed to be on the road. It's illegal for any bike with wheels bigger than 24" to be on the sidewalk. Ask them to call the police if they're that bothered. Police can do the blitzes, lights at night, bell and brakes are all legally required and you can be ticketed for them (as well as regular road offenses, running reds/stops/ambers, etc.)

Edit: one thing I do try and do, is when I'm in the right lane going straight at lights, I check behind me (look at turn signal/ask driver) if the person is turning right, and I'll move out of their way to get them through (either go to the lane divider or hug the curb - I prefer the divider) so as to not delay them, I'll often have to wave people through, because car drivers sometimes think they need 15ft. of clearance to get around you.

Oh, one more thing: watch out for the people who creep along the curb then all of a sudden pull out with no signal. Watch for no turn signals in general, and don't be afraid to take the lane before a tracked intersection to give yourself some safety room - those tracks are a pain.

Good luck out there