We lost a bunch soon after the new A2K went live, mostly they felt that the new platform was too complicated or they just did not like the feel. We lost a lot more because of the meanness, mostly from the liberals, as they worked tirelessly over years and often in mob action to drive away those who dont agree with them. Those who stay tend to be male, american and those who like to fight or argue. I am an american white guy who likes to argue.
Another thing which seems to be true is that those who dont spend a lot of time here tend to find the new A2K too much work, because when they log on they are flooded with many pages of threads and have to find what they want, were as before they would just check the forums that they were interested in. The self tabbing system never worked, both because of abuse tags and because many members like myself dont tag threads at all. The hamsters currently seem to be making a big effort to get good tags on threads, but it is a constant huge chore and that is only one of the problems here.
Massive amounts of hostility, often wholly gratuitous and done by people who swear up and down that their **** dont stink is the main reason you dont find so many people here anymore.
EDIT: when were you here before? I have been here since 07 but I dont remember you under your old name.