The billionaires who keep piling into TWTR understand that it is inevitable that this stock is going to $200 per share or more - and when it does it really isn't going to matter if they timed their entry into the stock perfectly or not. Where so many in the market are worried about where the stock will be tomorrow or next week, they understand that if they just buy and be patient they will multiply their money many times over. That's how they got to be billionaires whereas the day-trading schmucks fight to eek out a few bucks profit over and over until they walk into one big disaster and lose it all.
Don't focus or even notice the 40+ percent revenue growth because if you do then you might see potential problems with your position. Focus instead on whatever the negative hype stories tell you to focus on - the lull in MAUs and such. Oh, and good luck when that gets corrected - and it will - because that 40+ percent revenue growth might have legs for a while in that case.