I don't remember which stock it was, but in May 2009 it began.
The stock went up from $ 0.04 to $ 1.70 and dropped to $ 0.02 shortly thereafter.
Around August 30th, it suddenly rose to $ 0.90, four days later to $ 4, and it ended up $ 20 by the end of the week. I didn't follow the PPS any further, but I see parallels with RLFTF here.
Stay calm, it's worth it !