Virtual business cards / online rolodex. When you're running a company your business contacts are super important. So every time that I get a business card in

Virtual business cards / online rolodex. When you're running a company your business contacts are super important. So every time that I get a business card in some context I look the people up on LinkedIn, then I can also see more about their background, and I don't have to worry about losing their card or adding them to my address book. Incidentally, I didn't get LinkedIn before starting a business either. I'd even canceled my original account because I found the deluge of people that I saw at work every day adding me as a contact rather silly. Now, though, I use LinkedIn (or its European competitor, Xing) several times a week.