Padlet - Visual boards for organizing anything.
Pinterest - Pinterest is a visual discovery tool that you can use to find ideas for all your projects and interests.
DeviantArt - deviantART was created to entertain, inspire, and empower the artist in all of us.
Pearltrees - Pearltrees is a place to organize all your interests. It lets you organize, explore and share everything you like.
Dudepins - Dudepins is a visual blog that allows you to bookmark content that interests you by pinning it to your personal page. It is essentially a version of Pinterest with content that is catered directly to men and male interests.
Stample - Share bookmarks, articles, files and notes.