You're feeling pretty good about yourselves these days. Walking? Check. Cycling? Check. Recycling? Check.

But if there's a nagging feeling that there's more to be done, then a Swedish company has the device to help you maintain that guilt complex. The Manodo display from a startup company in Sweden puts green habits to the test.

The device gives household residents all the facts about how much and what is being used, right down to the number of pounds of CO₂ emissions from your last bath. Imagine having Al Gore living in your house reminding you each time you forget to turn off the lights. The intent is to keep residents aware of how much resources are being consumed through daily activities...and maybe guilt them into changing their ways.

The monitor also provides current information like the weather and when the next tram is scheduled to arrive at the nearest stop. Now being tested in the hallways of 15 apartments, the Manodo project isn't all about negative feedback. When good green levels in the apartment are reached, a green smiley face appears on the display. How else are you supposed to know if you're a good person?!

There are a lot of product recommendation engines in the world. In fact, one could make a pretty good case that there are, in fact, too many. But Huddler may have actually gotten it right this time.

They've launched their service with a green spin at greenhome.huddler.com. The site is a blog, a social network, a wiki, and a recommendation system all rolled into one. I've spent the last hour on it, enjoying myself tremendously.

I've written reviews of a few green products I own (like the Earth LED CL-5) and I marked a few items as things that I very much would like to own (like the Chevy Volt.)

The system is extremely simple to use, not to mention pleasing on the eyes. There seems to be a pretty good community growing up inside of the site, not to mention a huge amount of information on thousands of green products. You can subscribe to users, discussions, topics...anything! It's a joy to use.

Of course, like all social sites, there is a battle to be fought for participation. It will only be a truly enjoyable and robust platform if a large community adopts the site. In order to entice folks, they've got a giveaway going on right now, which you enter yourself into every time you do ANYTHING on the site. So that's nice.

But we'll have to wait and see if huddler can somehow create a chicken without an egg.