I think yookos.com has come to challenge the popularity and wave of facebook.com and i see a possibility of yookos giving facebook a real headache.Google has tried it best to put facebook out but has not been able,but with the momentum yookos has come with it wont be anything to put out the fire of facebook.With the popularity of Christ Embassy and Pst Chris himself i think Mark Zuckerberg should begin to think of a way out because he might be hit with a wave behind which he may not be able to explain soonest.