Here are some topic ideas you could create in this forum:

• "Hey guys, just so you know, gear on sale over at this link for super cheap!"
• "I'm 5'10" and 160 lbs, what rash guards fit others of you my size well?"
• "Is the new [whoever] DVD or subscription site worth it?"
• "How long do these new belts take to stay tied and soften?"
• "What gets the smell/stain out?"
• "Hey, there's a FREE DVD offer right now at BJJFanatics.com"
• "Who wants my old A3 Inverted Gear Gi?  I'm fatter now."