The Motley Fool's CAPS investing service is a 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 House episode, or whatever floats their boat.

As CAPS blogging catches on, players add more 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, I can't possibly cover all of the insightful stuff in the CAPS blogosphere, so when you're done reading, I recommend you check out more.

The official top 10 blog posts of 2007
Were you sleeping during 2007? Not yet a part of CAPS? Just too lazy to dig into the blogs? Well, the Fool's own TMFCHarris has assembled a list of the best blog posts on CAPS for 2007. These are all terrific, but I have to tip my cap to Chris for including TheHypnoToad on the list.

Simpsons zing condo bagholders
Leave it to the Simpsons to add insult to injury to those who got overexcited in the condo market. Kudos to TMFBent for putting this up.

Recession is here! But what about the stock market?
A lot of analysts and economists are pulling their hair out over whether we are heading into a recession, and stocks such as Home Depot (NYSE: HD), Target (NYSE: TGT), and AT&T (NYSE: T) have been trading as if we are. In his blog, camistocks takes the view that we are well on our way, and the only way to cushion the blow is for the Fed to be more aggressive about cutting interest rates. That's a contentious view for sure, but he makes some solid points to back up his position and has included graphs for extra color.

Declaration of Foolishness
An absolute gem from my Foolish colleague, TMFHollywoodDan.

Ethanol or bust!?!
The rise of stocks such as Pacific Ethanol (Nasdaq: PEIX) and Archer Daniels Midland (NYSE: ADM) might start you thinking that everyone is on board with ethanol. Not quite. CAPS player familyfund1 noted that "China ... the third largest maker of ethanol ... just nixed ALL new ethanol projects." Investigating further, she concludes that maybe ethanol isn't the promise it's often pitched as.

30% per year for five years
Nope, that's not an investment return -- that's how much above their annual incomes Americans have been spending, according to dwot. With all that's happened in the housing and credit markets, we've heard plenty about the amount of debt the average American consumer has taken on, but do we really understand what that means? In her blog post, dwot suggests we haven't come close.

Don't miss KB's balance sheet
A homebuilder update from floridabuilder earlier this week focuses on the earnings release from KB Home (NYSE: KBH). In an environment of woes and bleak outlooks, he says KB's balance sheet will help the company become one of the builders to make it through to the other side. When the company gave a lousy outlook, though, he thinks, many investors overlooked the power of its balance sheet.

There it is. A sample of the many first-rate blogs posted on CAPS. Join me again next week when I'll bring you seven more.

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Fool contributor Matt Koppenheffer shares thoughts of his own on his CAPS blog. He does not own shares of any of the companies mentioned. The Fool's disclosure policy gives all glory to the Hypnotoad.