Twitter and Facebook

When I went to Twitter today, it displayed a dialog

We were hoping you could help us make it easier for people to discover
their friends and colleagues on Twitter. Review your settings below to
make sure the people you care about can easily find you.

asking me to update my name, bio, location and email fields.

This suggests that both Twitter and Facebook are insecure about each other, seeing strengths in the other and weaknesses in their own service. Twitter feels threatened by Facebook's focus on a true circle of friends and colleagues. Facebook feels threatened by Twitter's capacity for marketing and building followers in public.

It suggests they may eventually become very similar in the features they offer, with Twitter integrating photos, video, circles of friends and Facebook making their content more public (which they are doing). Perhaps both sites will give users more control about who can see what content.

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