FreeContact management, networking
For many people, LinkedIn is a useful (but [[xref:http://www.pcworld.com/businesscenter/article/154936/linkedin_etiquette_five_dos_and_donts.html|sometimes annoying|LinkedIn Etiquette: Five Dos and Don'ts]]) Web service. The LinkedIn iPhone app really lets the power of LinkedIn shine.
For starters, the app lets you get rid of business cards and vanquish printed resumes. Who hasn't arrived back at the office with a pile of disorganized and creased business cards? Having access to the ultimate social network for professionals straight from your iPhone means you no longer have to swap business cards with people--you can just add each other on LinkedIn, on the spot. You’ll never lose another business card--and therefore lose a valuable contact--again.
[[xref:http://www.pcworld.com/appguide/app.html?id=86471|LinkedIn for iPhone|LinkedIn for iPhone]] also lets you view your entire network, and you can send and receive LinkedIn updates so that others know what you are working on and where you are.