Originally Posted by jbcohen
Most electronic readers are tied to a specific store and you will be forced to buy from that particular electronic store. ...<SNIP>.
???? The Kindle is tied to Amazon, unless you have software than can convert mobi to epub, but as far as I know any reader that reads epub can download from any site that sells in that format. I've loaded epubs from numerous sites, both free and commercial, on both our Kobo Wifi and Sony PRS-650. Neither unit is tied to any one store.