up-down: market makers are like a stock bookie. They make their ultimate paydirt on volume. As a trader, I prefer using market makers over a specialist (AMEX, NYSE). On OTCBBs, they tend to run a true market. Also, they'll let limit orders, during slower times, go through with sells at ask and buys at bid. When one gets to buy at bid and sell at ask on the same issue, one develops a fondness for MMs.
Inside selling today? You got it. See how fast it can happen on an entity like this? Yeppers, the insiders are playing the fiddle (on a Friday no less). Is this quality DD?
"When in doubt, empty the clip."