On Careers 2.0, the "Add Project" button would not work for me as long as I listed urbanairship.com as a project with this url.
The tags I used were:
android java git json android-layout android-actionbar android-fragments android-gcm google-wallet urbanairship.com
Once I added the project without the urbanairship.com tag, attempting to edit and save the project once I added urbanairship.com would fail.
I was able to add urbanairship.com to other projects successfully.