Teaching abroad in Japan, Andrew Vestal of yukihime.com gives his students a fill-in-the-blanks style activity with Penny Arcade comics while making use of their English skills.
Select "thoughts" from Treefingers (2008), a website by Mathew Preziotte in which users can submit anonymously and "water" the submissions they like or "weed" out unfavorable ones, affecting the color of the post.