A paid-for content subscription program is being introduced.

The new subscription model will reward those who are willing to pay for exclusive content.

Subscribers will also get early access to certain new features as they go live, and be able to provide feedback about the product.

The introductory price for subscriptions is $5 per month, according to chief executive Ev Williams.

100% of revenue from the first subscriptions will go directly to writers, according to Williams.