My first impression is this software is very easy to use. Set up was a breeze and you just drag and drop the photos you want to include. Click the number of pictures you want to include and choose your lay-out. You can then simply click shuffle until you get a basic layout you like. From there you can tweak it further by clicking on a photo and moving it to a different frame. The program will swap the photos for you. Once you have the photos where you want them, click on the crop icon to adjust them in the window how you want them.
The only drawback I found is you cannot re-size the frames. Linux support would also be nice.
They have several layout and border colors and options to choose from. Here are a couple examples!
You can purchase your own copy of CollageIt from http://www.pearlmountainsoft.com/.
I received one or more of the products mentioned above for free using Tomoson.com. Regardless, I only recommend products or services I use personally and believe will be good for my readers.