1. A computer-implemented method, comprising: inferring automatically a first expertise level of a first person who is a first user of a computer-implemented system from a plurality of usage behaviors; accessing a plurality of expertise levels, wherein each of the plurality of expertise levels are associated with each of a plurality of computer-implemented objects; selecting a first computer-implemented object of the plurality of computer-implemented objects, wherein the selecting is performed by a computer-implemented function executed on a processor-based device in accordance with a comparison of the first expertise level of the first person with a second expertise level of the plurality of expertise levels that are associated with each of the plurality of computer-implemented objects; and delivering the first computer-implemented object to the first person.