75e85bf1_ter_Go_Mainstream__The_Debate___Con
[0] Daniel Pritchett [Pro] Discovering interesting new people to follow is natural and easy. Your friends communicate with each other via @messages. This means it can keep growing and growing as long as new people are turned on to the service. If you join to follow @ricksanchezcnn you'll soon find yourself following 50 other people that you picked up in conversation. [Con] 
The inability to scale an individual's attention kills twitter once you get past a certain number of subscriptions. Some people do not like the service if they can not keep up with every single tweet that their subs send. Until these problems are better solved many people will be wary.
louisgray.com: Will Twitter Go Mainstream? The Debate.
Con