Armiel is a keen world modder, but she spends most of her time on TSS and MTS.
Also, on the worlds - it all looks so big and scary, and all this obsession with terrain paint. Like a house can take me days just snuffling about doing terrain. A whole world? We would be on Sim7 before I finished painting it.
EDIT TO ADD: Yes, customsims3 is also using mybb - this site is mybb too, but its modded to the hilt.