The 10% Promise team has been hard at work this week giving our analysis of all of the market's biggest moves. Here are a few of the moves that made me take a step back and go hmmm ...

Internet IPOs are back in style
LinkedIn
(NYSE: LNKD) hit the market yesterday and doubled its share price in no time at all. If the company didn't have a decent revenue stream of $243.1 million last year, or a small profit of $15.4 million, I might think we were back in the late 1990s. But that doesn't mean shares aren't just as frothy.

Fellow fool Morgan Housel pointed out that shares traded as high as 25 times forward revenue yesterday, which makes me wonder if this is a boom or bust stock? Only time will tell the answer to that question, but for now, we know the market has a voracious appetite for Internet related stocks. Facebook, you're next.

Bloggers give a $100 million bump
I admit L.A. Noire looks like a very cool game, but I thought the ~$100 million boost in market cap Take-Two Interactive (Nasdaq: TTWO) got on Tuesday based on reviews was a bit premature. In the past, I've questioned the power that analysts hold over the market, but are we really looking to Total Video Games and Game Informer to influence stock prices now?

Of course, maybe investors ran out and bought the game, played it for a couple hours, and decided just after noon that Take-Two should be worth $100 million more because it was that awesome. In my view, competitor Activision Blizzard (Nasdaq: ATVI) is a much safer pick in the gaming space, but Take-Two pushes the envelope and in doing so may have another hit on its hands.

Insiders cause a frenzy
Foolish investors know that insider activity can be a good indication of where a stock is headed. After all, insiders are privy to information that never reaches Fools like you and me, so if they think a stock is a great buy, shouldn't we?

The market thought so, with both Central European Distribution (Nasdaq: CEDC) and Eastman Kodak (NYSE: EK) jumping higher on nothing more than insider purchases. I guess when fishing for a bottom in stocks that have been on a downslide investors will grab at anything.

So keep an eye on those SEC filings. If directors are buying or dumping shares in a company you own, it may be time to reconsider your position.

Fool contributor Travis Hoium does not have a position in any company mentioned but is considering going long one unit of L.A. Noire. You can follow Travis on Twitter at @FlushDrawFool, check out his personal stock holdings or follow his CAPS picks at TMFFlushDraw.

The Motley Fool owns shares of Take-Two and Activision Blizzard. Motley Fool newsletter services have recommended buying shares of Take-Two, Activision Blizzard, and Central European Distribution, as well as creating a synthetic long position in Activision Blizzard. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.