OfferUp app set to rival Craigslist as premier mobile app for online buying and selling

A rival to Craigslist is fast emerging with the mobile alternative OfferUp, reaching 'unicorn' status and valued at $1bn having  received another influx of funding yesterday, the company reports.  The company closed a $119m funding round on Thursday led by private equity firm Warburg Pincus. They will reportedly use the money to continue to refine its online buying and selling experience. The app, according to an article in Geekwire.com, has 29 million total installs nationwide bu