As a great portion of the population is on social media, this make it easier for participating non-profits to generate funds via donations. The word will be easily spread among Facebook users, and they can conveniently make the donation they want with little time spent.
At the moment however, this is only partially beneficial on the donation front. When using auctions and retail as fundraising for nonprofit organizations, transactions must still be coursed through the official marketplaces the non-profit is using. If an organization were looking to the sale of different products to generate funding, they would only feature the product on their official social media account, but its purchase and subsequent donation would have to be complete on a platform like the eBay Giving Works program.