Ah, yes. The level pack stuff.
You can't make your own level packs, because, well, I don't know really. We had a forum about this a while ago, but it had some crazy rules about approval and relevance, so nobody actually bothered to make one.
Then I submitted my list of levels (for the pack in my sig) and LPChip killed the forum because it only had my own levels.
I guess I kind of understand that people want good packs with high quality levels, but the rules we had were just ridiculous.
If I remember correctly, your pack could not contain levels by one author only, needed to have 4 or more levels, all the levels needed to have the same or similar themes, needed to be popular (!?), and needed to be approved by a level pack approval comity.