Global services.......Whats the impact on booksellers and book swap sites?

Global services, have gone on a major increase on the 14th of may of this year. The impact of this is being felt within the book swapping industries (bookmooch, swapsimple & swapthing to name a few. This has meant that many users in America are finding it hard to be able to send out books. I reckon this might seriously affect the business model on these companies.