The popular micro-blogging network, Twitter is currently free for anyone to use - and users like it that way. According to the 2010 USC Annenberg Digital Future Study, 0% of respondents claimed that they would be willing to pay for the service.

From the report:

"Twitter has no plans to charge its users, but this result illustrates, beyond any doubt, the tremendous problem of transforming free users into paying users," said Cole. "Online providers face major challenges to get customers to pay for services they now receive for free."

The report goes on to stay that users are okay with web advertising in lieu of paying for the service.

Is this a shock to you?