So i’m doing a lot with twitter/facebook/linkedIn and working with their PHP tools to make connections between websites. It’s going to be interesting to see the type of applications that develop over the next year or so based on previously closed social networks opening themselves to developers and providing connections between the various services. There are many that are simultaneously competitive and complimentary. For example, LinkedIn and Facebook. LinkedIn is primarily business focused where Facebook is primarily personal. It makes sense for them to open themselves to connections linking your business life with your personal life. Twitter’s strength is immediacy. Linking the three profiles on the three different services provides a unique synergy that neither of the three of them could achieve alone.