Just received a second email an hour later, this time for hellofax. What part of "installing a plugin" makes it OK to email me? I can't believe anyone supports

Just received a second email an hour later, this time for hellofax. What part of "installing a plugin" makes it OK to email me? I can't believe anyone supports a company that spams so aggressively. Are all the near-identical sounding overly positive comments in this thread all astroturf? Surely a bunch of programmers and networking people can't be that excited about being able to sign documents online. In fact, this reeks of astroturfing.