Unfortunately, I started in September playing a few of these sub pennies and have not had the opportunity to sell for a profit.
I bought in trying to ride the wave when it made it up to 0.0008 for a brief moment. I bought a few shares at the bottom as well to average down my price per share. I will only see a few dollars profit at 0.0004. I have determined to start selling off at 0.0005 or anything higher. Maybe sell off 75% at that rate and see if it goes any higher then sell off the rest. But I will try and sell everything the first day it goes up. I will not wait around for a second day.
Some may wait for 0.0008 or will even wait for a decimal point to drop. Personally, I am selling ASAP, because I think it will be the last chance we get. We may even be too late. It has pretty much bottomed out long enough to do a reverse split. Looking at the 10 year chart on google finance, you will see that if the pattern were to continue, the split will happen any day.
Companies that offer products or generate revenue are ones that you can hold. This one is based entirely on speculation. If we profit, it will only be at the expense of our fellow investors. We just have to hope they take the bait :)