This year, some poor kids who would have otherwise received a nice toy from "Santa", will not.
As Paypal treated Regretsy's owners "Donate" action as some weird kind of fraud and froze her accounts (demanding she refund all donations and whatnot), the hailstorm of comments, shares, reposts and retweets is now raining all around them. Their FB page is so flooded with negative feedback that they don't manage to delete the posts.

Read [link] and join the crowd
Also, read analysis on [link] for summary and clear point-by-point why Paypal is wrong (as if what they did wasn't wrong by itself)

Share the info, tweet, blog and post about it wherever you can.