Imagine a florist who sells roses along with a air-tight cardboard box, and stipulates that the buyer sit inside this box every time he wants to smell this rose (so that others who haven't paid for the rose cannot not "steal" the smell).
That would be a good analogy for DRM (at least the way it is implemented today).
When I look for flights, I check bing, kayak, orbitz as well as hipmunk. Which one do I prefer? Simple: the one that gives me the best fare. Unfortunately it ends up being a different one each time.
The positioning of the dropdown clearly has a lot of influence on the results. People are horrible random number generators! In this case, people are unlikely to choose the ends (1/9) or the center (5) leading to a bimodal distribution with two modes at 4 and 7.
I liked the tenant-rent analogy xlarge:large:small::house:room:couch.
tl;dr version: The author is insinuating that Reddit doesn't have enough money to rent a house, so its renting a couch, and so it can't complain if the other occupants have an all-night rave party.
I hope Google learns from Buzz, and makes this an "explicit" opt-in. The blog post says that it will be only enabled if the user's Google account is signed in. But a user's Google account could be signed in simply because he is logged in to Gmail.
That would be a good analogy for DRM (at least the way it is implemented today).