Wanted to post this as someone who's benefitted from Blind on multiple fronts (offer negotiation, visa transfer info, etc). I went through a 4 month process landing an IC6 marketing (non-tech) offer at FB only to be told that an H1B transfer might not come through. Was able to convince the hiring manager to file under PP. Transfer approval came through in 7 days. [Base: 200k, Bonus: 20%, Stock:55k]. Given the H1B climate, I do think this is rare and I got lucky.
Product marketing, YoE: 12, BS in Mktg, MBA from top 3 B-School