Recently some of my files, and files from many other people, started to give an error on Mediafire about being damaged or encrypted. I sent them a ticket as soon as possible asking for information on that error and since they are closed on weekends I had to wait until Monday to get an answer from them. Their answer was pretty straight forward.
I think they should have told people beforehand. Like "hey we're going to limit file share per week for free account starting next week, if you want unlimited sharing please consider buying a premium account" instead of just pissing off everyone with error that didn't even made any sense with what was really happening.