1.) If cars are passing you on the right side, you are going too slow. Move over to your right. I don't care if that puts you in the 'granny lane', that's where you belong.
2.) If you are in the left most lane, and there are three or four cars riding your tail, it's because you are going to slow. Get your slow moving car into the lane to your right.
corollary to 2: if you're in the left most lane, look in your rear view mirror occasionally so you can see the cars behind you; that's not too hard is it?
3.) If you are driving, and there is more than a car length between you and the car in front of you, it is fair game for someone to move into that space. If you don't like it, keep either less than a car length's distance, or a car length and a half distance. 5 car lengths' distance in the middle of rush hour traffic is excessive, however.
4.) When two lanes merge, you merge in alternate order: car from lane 1, car from lane 2, lather, rinse, repeat.
5.) If you are That Guy who drives all the way up, in the lane that's about to disappear, and merges at the Last Possible Moment, I hate you so very very much.
6.) The speed limit is a suggested limit. You need to be going at the rate of the flow of traffic. A hint: in Illinois, this is never what is actually posted. It is at least 5 miles, if not 10 miles over what is posted. If you are doing the speed limit, you and your slow moving car should be in the granny lane.
7.) If you are going 45, even in a construction zone, when everyone else (in other words, "the flow of traffic" -- see #6) is going 60, all the rest of the drivers on the road, and then some, all hate you with the power of a thousand fiery suns. The gas pedal is on the right.