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CNET feature: Social networks don their platform shoes

Facebook scored big by opening up to outside developers. Now its rivals are aiming to follow in its footsteps.

Five months after Facebook unveiled its platform initiative, the real arms race isn't among developers who want a piece of the action. Now, it's all about other Web companies looking to replicate Facebook's success.

In the past weeks, social networks Tagged, Hi5 and LinkedIn have made it clear they're working on application program interfaces (APIs) for developer platforms much like Facebook's. Rumors have been flying that Facebook's chief rival is working on something similar as well--though it doesn't appear it will be announced this week, as some had thought. (Representatives from the News Corp.-owned site said they have "nothing to report.")

Read the rest of the CNET story here.