I have to put my hand up and say I used to be one of the druivers that sat in the Right lane (usaully sitting between 100 - 110kph). But I did not realize the right hand lane rules. Now I sit in the left lane unless passing, exception is where there are merging areas in the left lane, I like to move to the right to allow easier merging.
Oh yes another thing I have complained about is the merge like a zip, a lot of people must use Velcro as they do not seem to know how zips work. Theres always one guy who speeds up from behind to try and get infront of you even when the lanes have merged