What is Google Profiles?  Profiles, simply put, is a way for you to summarize yourself and your online activities into a searchable biographical brief. Google describes it this way:

A Google profile is simply how you present yourself on Google products to other Google users. It allows you to control how you appear on Google and tell others a bit more about who you are. With a Google profile, you can easily share your web content on one central location. You can include, for example, links to your blog, online photos, and other profiles such as Facebook, LinkedIn, and more. You have control over what others see. Your profile won't display any private information unless you've explicitly added it. 

Below is a screen shot from the Google's Profiles page.  You should really go there and soak up every little detail.  Google has so much to offer.  It's free.  How nice it that.  I'd love to hear your comments on this after you look this over, so hit me up.  I want to hear your voice on this.

1. Receive messages.
2. Add photos.
3. Create a page about you.
4. Add your contact information.
5. Add links to your other profiles and sites.
6. Show your location.

The premier expert on all things Google is Chris Lang.  You will need to bookmark his site as it will prove to be an invaluable resource.  Also, be sure to check out his tutorials on Youtube.