The saying "it's not what you know it's who you know" is now outdated.
It is who retweets you that matters these days and how big your sphere of online influence is. And in the last year many websites have sprung up offering a new service - to measure your reputation.
Why are we bothered? Because now what you do online could seriously influence how you're treated in shops, restaurants, and hotels in the real world as LJ Rich reports
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