The Motley Fool's CAPS investing service is one of the newest additions to the investing community at Fool.com, and it's another great way for investors to work together to beat the market. One of the features in CAPS allows users to set up a blog to talk about their picks, investing strategy, market view, favorite rugby team, or whatever floats their boat.

As CAPS blogging has caught on, there is a lot of great content being put up on a daily basis. So what I've done is dig through all of the blog posts over the past week to bring you some of the best posts that are coming out of CAPS. Covering only seven posts here, there's no way I could hit all of the great stuff in the CAPS blogosphere, so when you're done here, I highly recommend checking out some more.

Time to back up the truck on Zumiez
If you're a skateboarder, you may like the gear from Hidden Gems picks Zumiez (NASDAQ:ZUMZ) or Volcom (NASDAQ:VLCM), but you probably don't care what the stocks of those companies are doing. Investors, on the other hand, are far more concerned, given the fact that both stocks have been soundly pummeled recently. CAPS player KnightofShadows is one investor that is still a believer in the Zumiez story.

Merging bubbles
BHP Billiton (NYSE:BHP) continues to push forward with its plan to gobble up Rio Tinto (NYSE:RTP). While the commodity markets have been gangbusters over the past few years, not everyone is convinced that this environment will continue or that the deal for Rio would be a prudent move. One such critic is one of CAPS' top players, dwot, who writes why she thinks BHP's next couple of years might not be as swell as the last couple.

How I invest
When looking for philosophical "big picture" thoughts on investing, the blog of raytoei is a pretty good place to turn. Recently, Ray has been working on a multi-part series talking about his investing style and some of what he's learned as a young investor.

Not quite a jackpot
CAPS player jatade1 was impressed with the fact that 1-900 Jackpot issued an actual 10-K filing.  The actual content of the filing, however, was much less impressive. Among the disclosures in the filing that raised eyebrows -- Brian Fisher, the company's CEO, is also the president, CFO, secretary, treasurer, and sole director.

Why most investors underperform the market
I'll give you a hint on this one -- it's not because they're unable to  find the next Microsoft. In his recent blog post, Lance912 discusses how various levels of financial knowledge and different investing styles can lead individual investors to underperform the broad market.

Junk pumping 101
The Fool's own TMFBent is well known for his prowess in calling a spade a spade when it comes to shady stocks. Not all that long ago he was helping tip investors off to the shenanigans going on at Pegasus Wireless. Now he brings us blog readers some juicy junk that found its way to his email inbox. Don't worry though, no spammers were injured in the making of this blog post.

Hovnanian earnings analysis
What would a week of blogs be without a homebuilding update from floridabuilder? This time he jumps all over Hovnanian (NYSE:HOV) CEO Ara Hovnanian and the company's fourth-quarter earnings report -- or at least the spin that it put on its fourth-quarter earnings.

More CAPS Foolishness:

Volcom and Zumiez are Hidden Gems recommendations. Microsoft is an Inside Value pick. 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 in this article. The Fool's disclosure policy gives all glory to the Hypno Toad.