LIMS stands for Last Icon Maker Standing. Every LIMS is run a little differently but the general idea is that makers sign up at the beginning and each week (or whatever time period the group operates on), participants must submit an icon made from a cap or caps provided by the group. Each week, voters provide anonymous feedback on the technical quality of the icons. Each week, participants submitting the icons deemed to be the least technically proficient are "voted off" and eliminated from the competition.

It's a good way to get honest, constructive criticism and it forces you to stretch yourself artistically -- but it isn't for everyone. Except for one person, everyone is going to get eliminated and for some that's an upsetting experience. Definitely something to consider.

I don't know if that appeals to you but SG-1 is extremely lucky to have a lot of well-run communities, LIMS and otherwise. :)