Bricklink - Missing any LEGO-bricks or sets from your collection? Then look no futher.
GIMP - Find Photoshop too overwhelming? Can't afford it? Well, try GIMP. It's free and gets the job done. A+
Kontio - The most beautiful log houses I've ever seen. From the northern forests of Finland.
One.com - A great domain & hosting service for that I currently use. For a small fee you get everything you need.
Sea Shepherd - Do whatever you can to help save the dolphins, seals, bluefin tunas, sharks and whales!
Ubuntu - Tired of Windows? Then give Ubuntu a try. It's free, fast and open source, and works with Firefox, OpenOffice, Skype, Thunderbird, GIMP etc.