Right now it is from the FCC, but I have collected quite a bit of user reports as well, which will be posted at some point on a separate website.
I infrequently contribute to RR these days. I have a strong moral disagreement with holding volunteer data hostage. There's some irony that when it comes to legal protection, the streaming is a "platform" for individual providers, yet when it comes to profiting from the database, the user provided data is "owned" by Radio Reference. As long as scanner software has export restrictions due to Radio Reference, I will not contribute, since contributing further empowers information to be withheld and scanner marketers to be manipulated. Note that these restrictions prevent users from exporting even their own data from their own scanners. So I can't export my own data then copy and paste it to the RR submission. If RR doesn't want me to export my scanning data, then why would I export to the website?
Perhaps the database too should be a platform for advancing scanning rather than a barrier to spreading scanning information. To my knowledge, RR isn't paying people to discover frequencies, paying the administrators, or paying for public information requests, etc. They certainly aren't doing anything to protect the openness of the radio traffic either.