After opening and voting on an idea, clicking the "Back to all ideas" button should return to the idea list at the same entry.
If you page through the list of All Ideas and then open an idea and vote on it, when you click the button to go Back to All Ideas, it returns to the top of the list rather than the spot in the list where you were previously. This should ...
I think Dashboard should also show your score, just after the name as in My Profile
The implementation of a responsive frontend framework (e.g. Bootstrap) would be a great enhancement to the UI and makes IdeaJam more accessible for mobile devices.