My understanding was that, especially now, we are looking for high quality quantitative questions. As far as I sympathize with you (currently enrolled for level III in June), I think that CFA is rather weak on the quantitative side, so not a lot of material is going to be really suitable for this site. The FRM/PRM curriculum seems more interesting as far as quantitative material is concerned.
Nevertheless, if you encounter some interesting questions on the way - don't hesitate to put it here. I suppose everyone would be happy to see it. However, I think belonging to the CFA curriculum shouldn't be a reason per se. Normal rules should apply (quantitative, adequate level).
For some easier questions and more exam targeted approach you should indeed check out the AnalystForum. I know a lot of guys are using it for exam preparation.