DO blind people use social media? How many blind people use social media? Will any blind people see my posts? ...er, I mean, will they encounter my posts?

I would gladly add alt-text to my attachments if I knew someone would actually use the alt-text.

I saw an artist adding alt-text to their porn. I think that's super cool, but I have to ask: how many blind people are getting off to booru tag lists?