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New apps let you communicate with users across social nets.
I Can Has Cheezburger moves from the 'Internets' to the cell phone with a little help from a friend.
As the social network builds out its communications services, it will increasingly compete with the more mature Web giants--AOL, Google, Microsoft, and Yahoo.
Young mobile social networks on display include tools to phonecast, engage in location-based tagging, and win online contests.