Check out this message I got from HeinousCoho:
HeinousCoho: Describe the smell of your 'private area' in four words or fewer.
Apparently, something called Project Upstream is sending random messages to two people and then hooking the two people up to instigate a conversation. Neither person knows that they ’sent’ a message first. Usually, (or, as in my case, always), the messages are ignored by both parties. After receiving a few of these, I Googled around and found only the nixiepixel article above, though she links to some other info as well.