Facebook has responded to Google's decision to block the export of contact information from Gmail by offering users a work-around solution.
It has added a link, allowing users to first move their Gmail contacts to a PC and then upload them to Facebook.
Google stopped this process happening automatically, because it said Facebook did not share its data reciprocally.
Google said it was "disappointed" with the site's actions, whilst Facebook declined to comment.
"We're disappointed that Facebook didn't invest their time in making it possible for their users to get their contacts out of Facebook," a Google Spokesperson said.
"As passionate believers that people should be able to control the data they create, we will continue to allow our users to export their Google contacts".
BBC News