She doesn't appear to be anti-bookcrossing from this message. She does have a point though where sites like eBay where people sell used books to people that are believing they are buying new books inexpensively. Auctioner buys 1000 books from a bookstore (i.e. amazon) at a bulk rate where the royalty may or may not be honored (if Amazon sells to a bookstore, the bookstore is responsible for the royalty if I'm reading the rules correctly). Auctioner sells on eBay for just above the bulk rate. I do know this happens but as to what extent I don't know.
Ms. Albert seems to want people to buy new books instead of buying used books if they can afford it. Nothing wrong with that.
As for her argument that new authors may be pushed out of the business for poor sales.. it is possible but not likely from bookcrossing, used bookstores or public libraries. the cause will more likely be from those auctioners that sell books in bad faith.
Sorry... I just came back from the gym and the endorphins are still kicking in my bloodstream so my thinking is somewhat erratic regarding wording.
One thing of note is that the publishing business (books, comic books, magazines, etc) have ALL taken hits on their sales due to people not reading as much as they used to. Many blame this on the popularity of the internet, dvds, etc. Others blame the economy - if you don't have a job, you aren't going to be buying a whole lot of these luxury items.
Personally, I think it is partially all these things as well as the average quality of a book has gone down. There are what, 50,000 new books published each year? How many are actually not copy-cat books? 10,000? How many are original? 2,000?