There's at least two distinct types of imgur users, those who only use imgur as an image host and "imgurians." The huge usage numbers come from the former while the actual value (IMHO) is in the unpaid labor of the latter group (like most social media). That means imgur can piss off their freeloaders as long as they don't upset their community, but this is really no help at all because the community is far more critical than the freeloaders. Freeloaders don't care about imgur's community drama.