Also, not 100% sure if this applies to US trading/SEC rules for OTC but I do know it applies to the Canadian exchange; if you are using a purely investment type of trading account (where you pay taxes on gains), set your shares for sale using a GTC limit order at an exaggerated price like $50 USD. This will prevent brokerages from lending your shares out to those who want to short the stock. (Brokerages lend those available shares to their clients or institution trader who want to short the stock).
Individually it doesn't have much effect, but in numbers this strategy does limit their manipulation powers and increases the risk each brokerage is faced with when deciding how many shares they want to lend out. End result, the back office financial analysts allow less house shares to be shorter to stay in line with house risk guidelines.
Trust me, I was them for a little while... ;)
