Everything I know about what looks good right now I learned from Modern Math.
I never noticed there was such a market of Tumblr rebloggers… I have just linked to the images on Modern Math rather than reproduce the images or link to their previous source, as often it’s impossible to find the original source. To say that is not to judge – the promise of Web 3.0 is in fact that the interaction and curation of content becomes the content itself. The communication becomes the important thing, not just the content (the medium literally becomes the message).
Judging from the robustness of the Tumblr community, this emergence of unofficial collection of visual media may lead to a renaissance in official curation.