Why can’t twitter make money off of ADS

What is with Twitter?
They have so many users and so much strength on the internet, yet they can not come up with a way to make money.
Google was able to do it, and now you-tube is making it happen.
I have to believe that if they sat there for one hour and though about it they could come up with a way to make money off of Ads.
I want to see how long it will take this forum to come up with a way for twitter to make money.
What do you guys think? Can you come up with a way for Twitter to make money from Ads.

See original post by poketalk