1. A lot chunked, a lot - not. 2. It will be based on statistics. Same way as it works on Digg, etc. With a karma, with a minimal number of votes (vote=mark) to

1. A lot chunked, a lot - not. 2. It will be based on statistics. Same way as it works on Digg, etc. With a karma, with a minimal number of votes (vote=mark) to show mark to everybody. The last thing was implemented in Kindle readers (255 people marked this fragment). 3. - 4. So - you will be perfect marker in this service :) It's like in Wikipedia: low percent of editors is creating the content. 5. It's a good idea, but it's not so useful, as to provide people an abstract of an article. It can be the minor feature, as many others (like a social spellcheck, for example).