One difference is that Blind requires you to verify your account through your work email address. So users of Blind's Facebook section are presumably Facebook employees, while (most) 4chan users are not.
And Blind is explicitly for workplace discussion, whereas 4chan is just a random discussion website.
A useful analogy would be that one bar near your work that lots of your coworkers go to often, and end up talking about issues at work. That bar isn't officially affiliated with the company, and you don't have to ever go to said bar to nevertheless be affected by what transpires there. Except Blind has more to do with the workplace than said bar because a lot of people post to Blind from work.
A useful analogy would be that one bar near your work that lots of your coworkers go to often, and end up talking about issues at work. That bar isn't officially affiliated with the company, and you don't have to ever go to said bar to nevertheless be affected by what transpires there. Except Blind has more to do with the workplace than said bar because a lot of people post to Blind from work.