WOM lets friends share their connections between each other. You have an unified address book on your PC or mobile, where you can share some skills of your contacts to other friends. Your friends do the same and you get a huge mass of shared contacts with skills. So when you need some person you can find it easily and without bothering friends.
It's like skills on LinkedIn of Followed topics on Quora except that in WOM you can share skills of your offline contacts.