Flickr is almost certainly the best online photo management and sharing application in the world. Show off your favorite photos and videos to the world, securely and privately show content to your friends and family, or blog the photos and videos you take with a cameraphone.

Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, ...

ActiveRain real estate network allows real estate agents, mortgage professionals and brokers create a customized profile.

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people they meet.

Magnetic Resonance - Technology Information Portal (www.mr-tip.com) is a free web portal for magnetic resonance imaging. Radiologists, technicians, technologists, administrators, and industry professionals can find information about magnetic resonance basics, technology, artifacts, contrast agents, coils, sequences, links, events, abbreviations, greeks, symbols, units and measurements, news and acronyms. The database can be used as a tutorial or teaching file for education as well as a business directory with information of MRI equipment, manufacturer and medical developer. The services are interconnected, therefore one searched term can be find in more than 4 services. The info sheets include an extensive overview to special subjects like MRI artifacts, MRI contrast agents, MRI coils and MRI pulse sequences.