Now there are massive blocking of Twitter accounts.
Most often, block accounts when you to use mass-following. Blocks is forever!
Also do not use hashtags #ICO #Cryptocurrency etc
Be careful!
UPD
Some accounts of my friends that have been blocked marked "forever" are now unlocked
But anyway, I think we need to be careful
Well if the advertisements that we do on twitter affects the userfriendliness quality of the twitter itself, they have the right to block our accounts because of that. But the thing here is that, were not just advertising for something worthless, we're advertising for something that will change the world for the better future. Were giving the world the best technology through ICO and blockchain technologies. I think there's nothing wrong about that.