Academic
- Mischenko's website on electromagnetic light scattering.
- A repository of light scattering codes.
- ArXiv
- SPIE
- Optical Society of America (OSA)
Non academic (Useful iff you want to procrastinate)
- Piled Higher and Deeper
- Youtube
- XKCD
- Reuters (can't do without knowing how the world fares with me holed up in the glassy abyss of research)