1. A method for populating assets in a particular virtual world environment, comprising: receiving, by one or more computers, an identifier of a detected interaction by a user within another world, separate from a particular virtual world environment accessible by the user, from a device that detects and reports user interactions within the another world, wherein the user is an individual user; identifying, by the one or more computers, at least one particular trigger tag name assigned to the identifier of the detected interaction from among a plurality of separate detectable user interactions in a trigger tag database; identifying, by the one or more computers, at least one particular asset class from among a plurality of asset classes specified with the particular trigger tag name within a particular trigger asset coupling from among at least one trigger asset coupling in a trigger asset coupling database; accessing, by the one or more computers, at least one particular asset assigned to the at least one particular asset class in an asset class database; and limiting rendering, by the one or more computers, of the at least one particular asset within the particular virtual world environment accessible by the user according to at least one rendering setting specified for the at least one particular asset from among a plurality of rendering settings for specifying renderings of the at least one particular asset within a plurality of virtual world environments including the particular virtual world environment.