1. When sharing a picture to facebook or any social network the picture is not shown but the logo of the site? This must have something to do with the logo being the first image located when looking at the link? there must be a way to fix this...
2. When sharing to an external site a new window should be opened for the sharing as at the moment it opens in the current window and the window closes after sharing, so you can return to where you left off, you need to reopen the site...
3. Liking or giving a thumbs up, doesn't change the colour of what you liked until you refresh the page? this should be instant, and a colour change should indicate that it was liked, clicking it again should unlike it... change it back to normal colour...
4. Profile Pictures or thumbnails are of poor quality, photo viewing needs to be revised so full size high quality photos can be zoomed to at least full screen height (with ability to zoom in, like pinch to zoom...) and also should have the ability to flip / browse left and right to change photos etc...