2. The computer-implemented method of claim 1 , wherein the search expression further comprises a plurality of search expression terminals, a plurality of juxtaposition operators, and a plurality of parenthesizations, wherein generating includes iteratively and incrementally including the search expression terminals, the juxtaposition operators and the parenthesizations into the search expression to form the hierarchy of nested sub-expressions that are selectively associated by the juxtaposition operators, and wherein the parenthesizations denote order of application of the juxtaposition operations.
1. A computer-implemented method for evaluating or facilitating evaluating of a content item, comprising: receiving, by a search expression generator operated by a computer system, the content item, as part of evaluating or facilitating evaluating of probable effects of publication of the content item, wherein the content item is a selected one of a web page, a post to a social networking site, a post to a blog, a post to an online bulletin board, a document, or an electronic message, having text divisible into a plurality of sub-text; and generating a search expression, by the search expression generator, based on the content item, to facilitate evaluating the content item based at least in part on searching other content items through execution of the search expression, wherein the search expression includes a hierarchy of a plurality of nested juxtaposition sub-expressions, wherein nesting of the sub-expressions corresponds with nesting of sub-texts of the content item; wherein the search expression is to be applied by a search engine operated on the same or a different computer system, to other content items to generate a search result to facilitate the evaluating of the content item.