My Ubuntu 12.04 dash has become a clutter on lenses. At first I installed every lens I found on the internet. Most of them now I seldom use. So, is there any quick way to add/hide/remove lenses?
No, there isn't any such Lens manager yet in Ubuntu (24 September, 2012). But some apps are really in their way to appear soon. Such as this lens toogler app. Though this app is in PPA, you can use it.
We hope some more this kind of apps will appear in future and obviously in the standard repository.