OpenProcessing has two main focus:

1. to get Processing community together, to share, comment and collaborate. We are already quite open-minded people, displaying our works on our websites, sharing our codes. So OpenProcessing is trying to be a common portal for this collaboration.
2. to be a good channel of awareness of Processing, and to support the educational uses of Processing. Processing is being used widely to teach visual oriented programming, and in these groups, code sharing, exhibiting and working collaboratively is a necessary component.

In short, two big goals of OpenProcessing to open up the necessary channels for Processing community to communicate over their sketches, and to provide the tools to teach/learn Processing better, easier.