Time Travel is my favorite concept, so I made a subverse specifically for everyone to post their own thoughts about it or link to relevant news articles or discuss related fiction.
I also run a Time Travel blog called Timely Paradox, which I use as a creative outlet for my obsession. I'll link it every now and then here. Hopefully you like it and I want to encourage you to publish your own content as well! If you don't like the idea of a moderator linking his own site (I can understand if you don't), let me know and I can stop linking to it.
Anything Time Travel related is welcome!