I found myself on here (the only H-1B at my company), and the salary is almost $20k less than what I was being paid by the time the visa stamp actually arrived, and $80k less than today (3 years in).
As frustrating as actually going through the US immigration system is, I do appreciate that they put out some good data on it.
I'm currently going through PERM (and again, frustrations, audits, and personal nightmares aside), it's great to see that I can look at all the processed applications from just 1-2 days ago - and see details on company/role. There are plenty of sites that the ugly/difficult data that govt puts out itself, and makes it a bit easier to navigate; one example I've used is dolstats.com