I ordered from White House Black Market that uses them. Ordered clearance items (which are no longer available) Borderfree loses my package (I had to track them down as of course there is no response like others said to emails. Then they just shrug it off - like "we lost it" we will just ask for a new one. Like this happens all the time. WTH!
Those items weren't available anymore of course...
All in all TERRIBLE experience.