I just found out that LinkedIn has gone mobile. I really think this has a promising future. This is great in those moments that you ON THE SPOT would like to check your network for people connected to corporations, brands, interests, etc.. I really like the simple invite structure(see screenshot). Just add the emailaddress of the person you meet and it sends an LinkedIn invite. See below some screenshots. I think I am going to use this instead of exchanging businesscards (maybe) 
