There are share buttons available in both the full-screen / phone view and the image rate/tag/comment pages.
Rating buttons are prettier and easier to use on a phone
On the photo gallery thumbnail pages a shift-click will take you directly to the rate/tag/comment page, bypassing the full screen view.
The rate/comment/tag link in the full-screen view opens in a new tab so you don't lose your place in the gallery when you want to comment on, rate or tag a picture.
