I voted for ONLINE.
Firstly, since its available on the Internet, its available to all, no physical boundaries, no shipping costs, the same quality of information can be viewed by all and used by all.
Secondly, you dont have to maintain the physical copies of the print media and incase you want to refer back to some articles, just search....data mining.
Thirdly, Environment friendly.......you save paper.......imagine how many trees are you saving by having it online
....good for our lungs....on a lighter note.