The Motley Fool's CAPS investing service is another great way for investors to work together to beat the market. Among other features, CAPS lets users blog about their picks, investing strategy, market view, favorite rugby team, or whatever floats their boat.

As CAPS blogging catches on, players add more great content on a daily basis. I've dug through the past week's posts to find some of CAPS' best insights. With room for only seven posts here, I can't possibly cover all of the great stuff in the CAPS blogosphere, so when you're done here, I highly recommend checking out some more.

Be king (or queen!) of the water cooler
Check out the newest contest on CAPS and show the rest of the 95,000 players on CAPS that you deserve the water cooler crown.

Done with investing in the market
Well Mr. Market, I sure hope you're happy.

Thanks to Mr. Market's crazy mood swings, CAPS' All-Star blogger floridabuilder has finally had enough. He's swearing off the market. Done. Finito.

In this most recent blog post -- and maybe his last -- floridabuilder reviews the recent land deal from Centex (NYSE: CTX) and then (I never saw this coming) puts himself in "time out." You heard that right, time out. You'd better just read his blog post.

Picking retail ... how?
Picking retail stocks is a dangerous game in this market. Some might say suicidal. But TMFSarahGen has put together a great blog post that details multiple approaches to finding the best ideas in retail. She throws out a handful of specific ideas as well, including American Eagle Outfitters (NYSE: AEO), Dress Barn (Nasdaq: DBRN), and Crocs (Nasdaq: CROX).

Predicting major stock moves
Most people following the collapse at Bear Stearns (NYSE: BSC) have probably heard that somebody was buying up $30 puts while Bear's stock was still trading at more than double that. Not a score that lucky trader made!

In his blog, Hezakiah cites a study that claims that action on out-of-the-money option contracts can be a good predictor of big moves in individual stocks. Using this logic, Hezakiah notes that Merrill Lynch (NYSE: MER) and Lehman Brothers (NYSE: LEH) could be following Bear.

The government's misleading picture
If you're getting ready to click that "buy" button because of a bullish economic release from the government, you may want to stop by and read TMFDeej's recent blog post. He looks beyond the headline numbers and asks whether the data that the government is giving us is really worth using.

Tough question: clearing your portfolio?
As always, "Hollywood" Dan (a.k.a. TMFHollywoodDan) is pounding the pavement ... errr, blogosphere ... and asking the tough questions. This time around he's asking CAPS investors whether its time for The Motley Fool to break down and give players a way to hit the reset button and start CAPS a-fresh.

End of an era
As the credit crisis wears on, it seems like there are an awful lot of people that have gotten pessimistic about the stock market. In fact, on some days, it may seem like pessimism is peaking -- usually a good sign that you should be investing. CAPS player blackeye101 thinks this may be a bigger misconception than the idea of aliens at Area 51. In his blog post he suggests that more Americans own stocks than ever before, and the asset class has not yet become beaten up enough to make it attractive again.

And that's our round-up for this week. Be sure to check back next week for more great blogging action. In the meantime, why not head over to CAPS and add your two cents to the community pool?

More CAPS Foolishness:

American Eagle Outfitters is a Stock Advisor pick. Dress Barn is a Motley Fool Hidden Gems Pay Dirt recommendation. The Motley Fool owns shares of American Eagle Outfitters. You can try out any of the Fool's newsletters free for 30 days.

Fool contributor Matt Koppenheffer shares some thoughts of his own on his CAPS blog. He does not own shares of any of the companies mentioned. The Fool's disclosure policy used to give all glory to the Hypno Toad, then it was Stephen Curry, but now it's Mr. Krabs.