4 ms·

Google patented a social graph that decays based on level of interactions awhile ago: https://patents.google.com/patent/US9020965B1/ https://patents.google.com

• Grimm1 5y ago
  The fact I had that thought at little earlier in this thread before reading your comment leads me to believe two things, one it's a somewhat trivial idea to arrive upon and that two our patent system is broken that something like that could be patented when it's really not a hard thought to arrive at.
• gnicholas 5y ago
  Google's social graph decayed a little more quickly than they'd hoped...