No mention of Face-Pic or FaceParty? They were the original ancestral Facebooks. Faceparty eventually attracted a more mature crowd and petered out into a dating site. Face Pic on the other hand was for teens. An adult on there would have quickly been brandished a nonce. There was a top 5 popular profiles and some dude from the Blazing Squads younger brother was always the top 1.
Teen Chat was the first ever website I would regularly frequent as a young girl. Like another poster said, what were we thinking? Looking back titles such as ScotsLad111 were quite suspish. I sometimes used to use a teen forum called The Junction, but the demographic grew quite gothic, which wasn't my scene. As time went by I preferred UK music forums such as RWD and UKgarageworldwide or downloading music from Napster and Limewire. There was also a more illusive one, when those 2 started charging but I can't think of the name. Eventually MySpace, but I then became a mum and suddenly felt too uncool for it, so gravitated towards the early MumsNet and a website dedicated to hating in laws, called Ihatemyinlaws.com and read the updated stories on the homepage on a daily basis.
There were a few mobile ringtone sites I enjoyed. One had a forum which was popular with teens in the UK, can't remember what it was called but there was some very suspicious people on there.
SteakAndCheese if you wanted to know what the scene of a motorbike accident or someone born with an extra digits looked like.
I used to look at Karmaloop for clothes I knew I wouldn't afford the shipping fees on. I did love looking at the clothing on SpoiledBrat and the original Asos.
I remember using Homstead to construct a website that served no specific purpose other than a few pictures of me and aload of those doll icons.