I like to imagine some alien civilizations version of Voyager 1. Perhaps they sent us their own golden record with difficult to decipher pictographs and samples of pictures and music.
If it is, given its trajectory, it's probably not meant for us. I would be nice to keep an eye on it though -- it'd be fun to get a complete scan and hope it's doing the same in return. It's too bad it's likely too late to rendezvous with it and get some samples.
Some tabloid is already writing an article "First alien nudes from outer space discovered".