Do you like to roleplay?
MTS has an online play-by-post Roleplaying Forum, for all sorts of interesting RP themes (many non-sim-related) - write collaborative stories with other people for fun!

Just installed the Sims 3 patch or about to?
Read this article for helpful advice about patching and keeping your custom content working!

Want to create your own clothes for the Sims 3?
Read this guide for a tutorial!