I doubt similarweb are just plucking number out thier ar$e for thier rankings. If you provided a ranking I would say that lacked credibility but for a website with specifically designed algorithms to track this very thing well, I think you can give thier numbers a bit of credibility. It's what the businesses is all about wouldn't you agree?
they would fail to exist if it was all a hoax and a shame as you seemed to be alluding too.
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