It has helped streamline our resolutions to problems, which has been a huge plus. I enjoy having a thorough log of problems and solutions.
The feature that stands out the most for me personally, is the issue tracking feature. I love being able to flawlessly keep tabs on challenges. This feature paired with the activity stream has tremendously helped out in day to day tasks.
I wish it allowed for more projects with the lower tiered plan. It would be beneficial to allow at least five more.
We've started using Goplan in 2009 for our group of companies and it's great, very simple to use and straightforward.