Non-profit investigative journalism outfit ProPublica is to start using Press+, a payment plaform launched last year by startup Journalism Online.

ProPublica will use the tool to manage public donations, with Press+ logos across the site to encourage users to give money. Following an arrangement with the John S. and James L. Knight Foundation, which has provided 10 non-profit news sites with the platform, ProPublica will not have to share revenue with Journalism Online for the first year. The New York-based non-profit is the second outlet to take up Press+, following its launch on the New Haven Independent site in June.

Journalism Online was launched in April 2009, and won investment from News Corp in June 2010. Its first client was LancasterOnline.com, which began using the Press+ system in July to charge for its access to its obituary pages.

ProPublica announcement at this link.