If you’re not familiar with Google Labs, you need to go to http://www.googlelabs.com and bookmark the site so that you can check back and get in on whatever Beta functions they’re allowing you to play with in 2010.

Google has this experimental section open to the public so that they can have their users test out applications, allowing them to weed out problems and get feedback on how to make it better before it officially launches.

Now we don’t know what’s on the horizon, but it’s important to check in frequently so that you can test features that may be limited to a certain number of people or may be pulled without warning before you got to try it out.

Here are some past examples of what’s come out of the box for you to have fun with and utilize in ways that help you reach your target audience:

Social Search – This cool new feature lets you see results pages that are in line with what your social circle has created. That circle is made up of people in your Gmail account – chat buddies, friends, family, groups and even Twitter and FriendFeed.

Related Links – This is a neat gadget that lets you present a bunch of relevant pages within your own domain that your visitor might prefer to go to. Instead of clicking out if they don’t see what they need immediately, Google helps them find what they do need without them having to conduct another search.

Google Audio Indexing – Did you know that Googlebots can crawl your YouTube video and index it based on what it hears you say? Not only can people find your video through this tool, but they can jump right to the point in the video where you speak a certain keyword phrase. Many say this will eliminate text tags in some instances and will force marketers to be honest about the content of their video.

Google Checkout Store Gadget – This lets you have an online store without having to know complex code. Use a simple Google Docs spreadsheet and in under 5 minutes, you’ll have code you can cut and paste into Blogger, Google Sites, and your own domain with ease.

This helps many marketers who are on a shoestring budget get started. For example, using Google Analytics lets you analyze the traffic of your website for free while others are paying an arm and a leg for similar tools.