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Well, one suggestion pertaining to both 1. and 2. could be to not promote it as 'a social platform where everyone gets paid for creating and curating content...' (this is a quote from an actual share I saw today). We should let people know exactly what it is, what the possibilities are, and what to expect. Promoting it as a free, high-quality blogging platform may be more fruitful in terms of retention. When people then realize they may also get paid for blogging, they are more likely to stay.

true... that's a very good suggestion @initforthemoney