I played the Sims Online too. It was okay, I can only imagine where they could take it now with all the advancements in gaming and improvements in The Sims franchise. I'm pretty certain though that Sims Forever is just "The Sims". Not The Sims Online.
I remember going to a lot and we converted it into an insane asylum. And we invited a whole bunch of people over... It got pretty crazy pretty fast. It was hilarious and is one of my fondest moments of The Sims Online.