The Motley Fool's CAPS investing service is a great way for investors to work together to beat the market -- and maybe get famous while they're at it. Among its features, CAPS lets users blog about their picks, investing strategy, market view, their favorite college football team, or whatever.

As the CAPS blogosphere continues to grow, players add more great content daily. I've dug through the past week's posts to find some of CAPS' best insights. Of course, with room for only seven posts here I can't possibly cover all of the great stuff. So when you're done here I highly recommend heading over to CAPS and checking out what some of the other investors have to say.

Infrastructure stocks
Although excitement about the China and India growth stories may have died down a bit and brought the prices of materials and infrastructure stocks with it, it may not be time to count out infrastructure companies quite yet. CAPS blogger GyroDynasty recently wondered what the best infrastructure stocks will be for 2009 and beyond, and has already received quality suggestions, like ABB and Foster Wheeler (NASDAQ:FWLT). To see all the stocks being tossed around or add a few of your own, head over to GyroDynasty's blog.

Infrastructure stocks II
And if you haven't had your fill of infrastructure stocks, TMFBerg looks at President-elect Obama's strategy to create jobs in America and its potential impact on infrastructure companies. He highlights Fluor and KBR (NYSE:KBR) as two potential beneficiaries. Click through to TMFBerg's blog for the full scoop.

Don't buy homebuilder stocks
Thinking about starting to nibble on KB Home or Toll Brothers (NYSE:TOL)? You may want to tune into what jstegma has to say first. This investor thinks that although some people are talking about a turn being on the horizon for housing, investors should still be steering clear of homebuilding names. Check out jstegma's blog to get the full view.

Two TARPs for Citi
It's been big news that Citigroup (NYSE:C) had to have some emergency government help to keep its engines chugging, but what does it all mean for current and potential Citi investors? CAPS blogger rd80 recently took a crack at breaking it all down, so why not hop over to the blog and check it out?

What I learned from Vegas
Is Vegas anything more than empty entertainment? CAPS blogger TMFBomb thinks so. While his recent trip to Sin City has led him to consider gaming stocks MGM and Wynn Resorts (NASDAQ:WYNN), he also found some tasty investing lessons waiting for him at the poker table. What lessons you ask? Well, you'll just have to click through to his blog to find out.

Citigroup more deserving than Detroit! LOL!
General Motors (NYSE:GM), Ford (NYSE:F), and Chrysler are staring down the barrel of bankruptcy and all three have been stymied by Congress in their quest for a capital injection. The question, of course, is: If we're going to give billions (more) to Citigroup, can we really deny the automakers? CAPS blogger iamamartin thinks not. Head over to iamamartin's blog to get this investor's thoughts.

A must read!
Rather than spill any of the beans on this one, I'll just direct you to ToddMCTC's blog (who then will direct you toward the "must read").

And that's our roundup 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?

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Fool contributor Matt Koppenheffer is recovering from his Halloween sugar overdose just in time for a Thanksgiving turkey overdose. He does not own shares of any of the companies mentioned. The Fool’s disclosure policy is glad its job doesn't include making a decision about the Big Three.