1. A method, comprising: accessing a collection of reviews generated by a plurality of users and pertaining to multiple features of multiple products, wherein said accessing comprises communicating with a server on which the collection of reviews is maintained; computing multiple qualitative measures for each respective one of the plurality of users based on analysis of the collection of reviews, wherein said computing is carried out by a user scoring module executing on a hardware processor that is communicatively linked to (i) the server and (ii) a plurality of devices operated by the users; and outputting, to a sub-set of the plurality of users, (i) a deployment of a given product comprising a new feature of the given product and/or a modified feature of the given product and (ii) a query for a review of the new feature of the given product and/or the modified feature of the given product, wherein the sub-set of the plurality of users is selected based on said computed multiple qualitative measures, and wherein said outputting is carried out by the user scoring module communicating to a sub-set of the plurality of devices that correspond to the sub-set of the plurality of users.