Just some warm words. I love the concept and I think sites like this are very important to get fresh blood actively participating online (to be really online versus having a fixed flow tumblr blog). Keep the barrier of entry as low as possible... thanks a lot! :)
PS: the text editor has some quirks in Safari 7 where the caret is a few characters off sometimes (so when you type the characters appear in the wrong place). Might want to switch to a default <textarea> for Safari 7 for now...