Nothing wrong with taking profits if you want, but I'm very optimistic on this one, and in it for the long run (as in years). I personally wouldn't bother trading any less than 5k shares at a time, though, so as to trivialize the brokerage fees at least. Even 5k shares wouldn't be but a tiny blip on the radar.
Those fees could really add up if you're only trading 500-blocks using a flat-rate brokerage like Scottrade.
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