I started my online gaming life on Barrysworld back in 1998, as they ran a Qizmo proxy which let me play Quakeworld from behind my uni's firewall.
Interesting to see Wizzzards mentioned, one of my earliest matches for my first clan was against them I think.... trying to remember some nicks of their players, "Nailer"?
To be honest I probably spent far more time on BW FFA than I did studying for my degree, I don't really regret that though, it was happy days racing to hit the 50 fraglimit with Twink, Raggy, Treznor, Jimbob, Caustic etc. Sadly I was a little too late on the scene to play much against the true 'legendary' clans like QL/QPD/DC/EA/SK, that's the only regret really, winning UKCL/MCW didn't feel quite as sweet as it should have knowing that many top players had moved on to Q3.