After you've searched for topics of interest in "Groups" above and in the "Forums", don't forget to look at recent activity which hides along the right margin of the page all the way at the bottom.
On a personal note, I've developed an animated gif technique, sort of “pull quote marries slideshow”. Samples are scattered across various groups, but you can find them easily by going to my twitter account. Each tweet has a link (after the description and before the hashtags) to a visually rich example here at Atheist Nexus. If you like them, please follow me
Hi Ryan Welcome to this world of rationality, truth and peace, where common sense and science lead to open freethinking wisdom as you know well asa true atheist. We invite you to join the busy group "ORIGINS: Universe, Astronomy, Life, Earth, Humans, Religion, Gods, Atheism, Evolution, Darwin..." with 700 discussion topics and 3600 members. http://www.atheistnexus.org/group/originsuniverselifehumankindanddarwin