twitter caution this account is temporarily restricted?

Question

When I went to a profile on twitter I was following I got this message. 

Caution: This account is temporarily restricted

You’re seeing this warning because there has been some unusual activity from this account. Do you still want to view it?

Answer 1

That just means that someones account has shown some unusual activity and twitter just decided not to show it to you unless you want to see it.

I'm not sure what the unusual activity is though as some accounts I've got the message on didn't show anything bad or different.