Good stuff. The one validator of thinking big is when people constantly detract your ideas - OR - equally detract you from your pursuit to tackle those ideas.
Can you imagine someone coming up to you in a Twitterless world and saying "Hey, do you want to invest $10k into my startup that allows people to communicate with each other in 140 characters or less, in an online open forum?"
Can you imagine someone coming up to you in a Twitterless world and saying "Hey, do you want to invest $10k into my startup that allows people to communicate with each other in 140 characters or less, in an online open forum?"