Craigslist is a strange place online that has many elements of society, some of which may be funny to some of us. Examples:
Photobombing Craigslist Dog
Real Estate listing for an apartment on Craigslist and their dog is photobombing every picture of every room in the unit in the advertisement. Makes you almost wonder why they didn't specify to Craigslist users that the dog is not included int he apartment.
Imagine for a moment that you come home one day, and catch the cat on the computer. While probably impressed at first, would be hilarious if turns out that kitty went on Craigslist and sold the dog.