Here is a definitive list of the top ‘Web 2.0‘ sites that relate to frugal living (whew, this took a while!). Please Stumble It and let us know your favorites!

Consumer Info

Zillow

This is one of the neatest Web 2.0 sites of 2007. You can list your home for sale, browse homes in your area, and see comparisons of real estate estimates. It’s a great tool to get a sense of the local real estate market.

Fixya and ExpertVillage

Do-it-yourself resources in which users provide each other with advice. Fixya has product-specific Q&A’s for troubleshooting your appliances and gadgets, while ExpertVillage has user-submitted videos that provide a variety of expert tutorials.

Epinions

View consumer opinions for pratically everything. Sort through products top-down to see the best that you can buy. Note that if you submit reviews, you can make $10 for every 10 products.

Cooking/Restaurants

Tastespotting

This website looks delicious! If you have posted a recipe onto your blog (for Menu Plan Monday, as an example), you can post a high- quality picture to this web site with a link back to your page. Users then browse pictures posted throughout the blogosphere. Example: top 100 pictures roundup at NotCot.com

Group Recipes

An extensive social network of people sharing their favorite recipes with each other. Make friends and browse a large assortment of foods. There is an exceptionally frugal feature that allows you to search for recipes based on what is in your pantry.

Yelp!

A web site with consumer reviews of restaurants (as well as shopping). Note that this integrates into Google Earth so that you can view the locations of restaurants alongside reviews.

Shopping

Kayak

A popular tool that aggregates flight, hotel, and vehicle rental information to help you find the best deals on your travels. It compares results against sites such as Expedia, Hotwire, Priceline and more to give you a complete internet-wide search.

Like

A great way to shop online. You click through photos of clothing and see a variety of other items that are similar in design. While browsing, you can even view clothes by their shape and color.

Etsy

Buy and sell hand crafted items. A fun way to earn extra cash. To get started, you might ask tips from Mrs. Micah, who has her own Etsy store (90% donated to charity!).

Budgeting Tools

Kacie wrote about the next three sites recently, but they are worth a second mention. Mint

Mint has become my favorite money management tool. I was not satisfied until they recently added features to allow you to see month-to-month spending in all budget categories. Next, I hope they allow customizing categories; there are just too many, so it is hard to setup your expenses accurately.

Wasabe

The money management on Wasabe is not up to par, but the social network allows you to see many great money-saving tips from other users.

PearBudget

Although we prefer Mint, many people have security concerns, and other issues, about some online money management websites. Pear Budget is an alternative that may work best for certain users. Note: It’s free for now, but expect them to charge in the future.

Frugal Blogosphere tools

StumbleUpon

Many of you may be familiar with StumbleUpon, a popular website and Firefox toolbar to view random webpages recommended by others. There are categories such as "Bargains/Coupons" to allow you to browse the internet’s best frugal web pages.

Instacalc

Frugal Bloggers can embed this tool to design a simple calculator into their webpages. This is what I used to design our Recipe Cost Calculator. Also browse through others’ calculators, too – Trent at TheSimpleDollar created a great example of how income taxes are calculated.

Free Online Alternatives

Songza/Pandora – Search for songs and play them instantly over the internet.

SplashUp – Free online tool similar to Photoshop.

Joost – Free TV shows via downloadable software.

Skype – Free phone calls to other computers.

This post will be included in the Frugal Tools section of Sense to Save. I hope you liked it!

Note: Written as a guest post by Kacie’s husband. Please comment to add your own favorite websites!