Edit: God damn it, this always happens to me. I divest all when I see my investment plummeting and as soon as I divest, the investor profit goes almost all the way back to where it was. Lost 10 days worth of investment in 10 minutes.
I know there's some investors (like cowbay) who wait until a they see investor profit go down, then invest, and divest when it goes up again.
But all in all, I'm not convinced you will outperform just putting money in (but only as much as you can afford losing!) and forgetting about it for a few months. And for added benefit, help promote some of the MP casinos
. For instance, had you put money in at the earlier investment opportunity, you'd now be currently sitting on a 36% profit. I'm not sure if that's worth the risks or not, but hey, it's better than having lost money =)