This is not really a blog post as a question. At my school we are looking for online browser based tools which allow students to markup a reading online. This might be an online textbook, e-journal, news article, ect. Basically I am looking to the digital equivalent to the high lighter and notes in the margin. What are people using for this purpose and if you would be so kind, what are the pros and cons to the tools you have found.
I appreciate any thoughts you might add.