Gotta say, I am newly signed up to UKFSN and am loving it! True, I am coming from a 512k connection with AOL, so even when this connection gets slow it seems fast to me, but so far it is great for me.
Stuck at home during the day due to illness at the mo, and getting anywhere from 4 to 8 meg speeds at the moment. (Gotta say, coming from a connection where I was lucky to get 50k per second, downloading at 650K + is pretty sweeeeet!)
I don't mind the slowdown at off-peak times, as I think it is quite a fair way of doing things. I leave my large downloads going overnight, have everything set to download from 10 till 8 automatically, and figure everyone else is doing the same.
I can understand it doesn't work for those people that are actively using the connections past that time (For gaming etc), but maybe this isnt the ISP for those people?