Average Up

You paid $10 a share for whatever.com but wussed out and only bought 1,000 shares when you really wanted 5,000. The stock then popped two bucks and now it's at $12. You think that in five years, it'll be at $50. So you buy another 1,000.

Then it pops another two bucks to $14. You buy another 1,000...eventually realizing that this hot stock ain't sagging back down to $10 any time soon. So you average UP your average cost of purchasing it. Lesson learned? She who hesitates is lost.