p.mk is a small service I built to allow easy, fast sharing of screenshots or copied images.
A short how-to below if you are unsure how to take screenshots on your system:

Mac
Portion screen capture: CMD + CONTROL + SHIFT + 4
Full screen capture: CMD + CONTROL + SHIFT + 3

Windows
Full screen capture: PRNTSCREEN
Current window capture: ALT + PRNTSCREEN

In Ubuntu
Full screen capture: PRNTSCREEN
Portion capture: CTRL + PRNTSCREEN
Current window capture: ALT + PRNTSCREEN

p.s. It currently works with Google Chrome and Firefox and hasn’t been tested with other browsers. Check out the source if you want to improve it, branch it or whatever else.

cmdv