1. A computer-implemented method, comprising: accessing a plurality of topics that each have an association with, or a potential association with, one or more automatically-determined expertise levels that are associated with a plurality of users of one or more computer-implemented systems; identifying computer-implemented content published by one user of the plurality of users; and inferring automatically an expertise level of the one user of the plurality of users that is associated with one topic of the plurality of topics, wherein the expertise level is inferred by a computer-implemented function executed on a processor-based device in accordance with an automatic analysis of the computer-implemented content.
1. A computer-implemented method, comprising: accessing a plurality of topics that each have an association with, or a potential association with, one or more automatically-determined expertise levels that are associated with a plurality of users of one or more computer-implemented systems; identifying computer-implemented content published by one user of the plurality of users; and inferring automatically an expertise level of the one user of the plurality of users that is associated with one topic of the plurality of topics, wherein the expertise level is inferred by a computer-implemented function executed on a processor-based device in accordance with an automatic analysis of the computer-implemented content. 6. The method of claim 1 , further comprising: inferring automatically the expertise level of the one user of the plurality of users that is associated with the one topic of the plurality of topics, wherein the expertise level is further inferred by the computer-implemented function executed on the processor-based device in accordance with a plurality of usage behaviors associated with one or more other users.