I know people love to hate on tumblr, but I find there is a large amount of great stuff on there. Here are some of my favorites, feel free to share yours:
literallyunbelievable.tumblr.com Gives us a look at some of the dumbest people on the net falling hook, line and sinker for satirical articles by The Onion.
terriblerealestateagentphotos.tumblr.com writes the best snark to the worst photos posted on real estate agents' sites. One of my all-time favorites:
A rare example of what architectural historians refer to as a “fertility window”.
And then, of course, there is JL8. http://jl8comic.tumblr.com/