An ad-free social network which styles itself as a rival to Facebook for the privacy conscious has raised millions in new venture funding.
Chief executive Paul Budnitz said the money will be used on product development - including building the back-end infrastructure to cope with its growing user base.
The number of people using the site soared last month, going from tens of users to hundreds of thousands in a matter of weeks.
At one point, the invite-only site was receiving up to 50,000 requests per hour and had to freeze applications because its servers could not cope.
Chief executive Paul Budnitz was previously a toy maker
Mr Budnitz hopes to fix the site's digital infrastructure with the $5.5m (£3.4m) of new funding from investors.
The company's manifesto guarantees an ad-free experience on the site, and says it will never sell user data to advertisers.
Instead, it is likely to make money by charging for micro-transactions and other optional features.
To show its commitment to the public promise, its co-founders have now converted the company into a public benefit corporation in Delaware, which means it has to prioritise and provide "a benefit to society" alongside profits for shareholders.
Mr Budnitz said: "This company will never have ads and will never sell user data.
"We've basically enshrined, in the most powerful legal way possible, our mission into the company."
