Greg Nudelman:

I guess no one told the P&G execs that the Twitter message “pooping” is actually a prank. They must have legitimately thought that they could transfer some sort of social engineering information about the person’s bathroom habits to “achieve and maintain synergistic Facebook connectivity.” I would have to struggle hard to find monumental absurdities from social networking experiments that are equal to this. I can’t imagine that anyone thinks “Finally! Sharing my bathroom habits on Facebook has never been easier!”

Great real-world example of Luke Wroblewski’s concept of gradual engagement on mobile, something that many apps fail at.