What Is Your Twitter Account Worth?

Serious question. Lets say tomorrow Twitter decides the service is no longer free and you need to pay a monthly fee to continue to use it. Would that be enough to get you to stop using it? Would $10/month be to much? Would $50/month be to much? At times Twitter has been priceless for me. Its made connections with people I would have never otherwise been able to reach. Whats it worth to you?