Yet so far, most companies in this market are creating closed formats rather than open platforms — which could lead to a Balkanized market in which no one has sufficient momentum to create a new standard. (salon.com)
There is some bug sometimes when not closed formatting tabs in the comments (either by forgetfulness or because of a bug) bleed into the next posts, sometimes making all the posts bellow size 1 by default...: O (gonintendo.com)
There you have to watch for piracy and having a closed format like Kindle or iBooks could be beneficial. (jakonrath.blogspot.ru)