3 ms·

But why?

• herghost 8y ago
  not OP, but I imagine it might be one of: it's valuable (sellable) information, fraud is more likely to come from anonymous/disposable email address sign-ups for services, tracking is more valuable when tied to a (semi-) verified/verifiable identity, valid email addresses can be enriched via other sources of information people might have access to?
• sjwright 8y ago
  To thwart low-effort drive-by anonymous abuse. (I also block TOR. Pure anonymity is not a service I choose to offer, because it is inevitably abused and I don’t have the time or resources to deal with it.)