Travelling

http://www.adventures.is/ (Arctic Adventures)
http://www.tripadvisor.com/ (Tripadvisor)

Aurora Forecast webpages

http://www.gi.alaska.edu/AuroraddForecast (Geophysical Insitute of the Unviersity of Alaska)
http://en.vedur.is/weather/forecasts/aurora/ (Icelandic met office)
http://www.spaceweather.com/ (Spaceweather)
http://www.swpc.noaa.gov/rt_plots/kp_3d.html (Spaceweather Prediction Center)

Regular weather forecast webpages

http://www.vedur.is/ (Icelandic Metrological Office)
http://www.yr.no/ (Norwegian Metrological Insitute)

Scientific Info pages

http://www.geo.mtu.edu/weather/aurora/
http://www.aurora-service.eu/aurora-forecast/
http://www.gi.alaska.edu/AuroraForecast/TravelersGuide
http://en.vedur.is/weather/articles/nr/2549

Blogs

http://earthincolors.wordpress.com/2013/09/19/tips-to-see-the-northern-lights-in-iceland/
http://www.natalia-robba.com/myblog/travel/the-aurora-borealis-the-northern-lights-everything-you-need-to-know/

Camera equipment sellers

http://reykjavikfoto.is/
http://www.fotoval.is/
http://www.beco.is/ (rental)

Outdoor clothes online shops

http://marmot.com/

Facebook

https://www.facebook.com/pages/Northern-Lights/24315281780?fref=ts
https://www.facebook.com/pages/Northern-Lights/149806601700622?fref=ts
https://www.facebook.com/AuroraChet.Apichet?fref=ts
https://www.facebook.com/auroraaddicts
https://www.facebook.com/iceland.northernlights
https://www.facebook.com/buyimage
https://www.facebook.com/jasonsimpsonphotography
https://www.facebook.com/adamhillstudios1
https://www.facebook.com/JaniYlinampaPhotography
https://www.facebook.com/icelandaurorafilms

Videos

http://www.icelandaurorafilms.com/

Others