http://www.uni-leipzig.de/~physik/mona.html (molecular nanophotonics group, Uni Leipzig)

http://en.wikipedia.org/wiki/Photothermal_optical_microscopy (Wikipedia article)

http://www.visualcomplexity.com (visualization of complex networks)

http://www.sciencedaily.com/ (science news)

http://physicsworld.com/ (science news)

http://www.wolframalpha.com/ (online mathematics)

http://www.atoptics.co.uk (atmospheric optical phenomena explained)

http://arxiv.org/ (free online archive of scientific pre-publications)

http://www.sciencedaily.com/newsfeeds.htm#technology (science daily RSS news feeds)

http://imslp.org/wiki/ (free sheet music)

http://www.linkedin.com/pub/markus-selmke/43/6b7/71b (my linked in page)

Researcher ID: http://www.researcherid.com/rid/I-8017-2013