In projects there should be a People who Favorited/ Loved this also Favorited/loved this: (other projects) Unpridictible , ScratchNews , CatSocial, Unwind your Mind (Examples)
Re: People who liked this also liked _____ section
This is like on Amazon. where it says "people who bought this also bought this" section. This would be cool, and I think that it would get some unknown projects alot more views.