Think about what it could be, rather than what you fear it might turn into.
The potential is huge for an acquirer, however, it would be relatively easy for another social network to allow members to create profiles for the deceased. In the future, many of today's social network connections might just function as 1st person genealogical records (provided the companies can sustain).
[1] http://www.bloomberg.com/news/2012-08-22/ancestry-said-to-se...
Beautiful euphemism for "died before the Internet was invented"