If you want to fill your head with interesting information, see beautiful pictures, review fun facts and dream about far-off places, this is the website for you.
Especially handy if you need to write your research proposal, and would rather spend time daydreaming and surfing the net, than actually studying, but your conscience doesn't let you do anything really "anti studying" like go out or watch a movie.
Also a great site for SEO, to promote your blog posts