1. A method, implemented at least in part by a computing system that has a processor, comprising: evaluating, with the processor, whether one or more strings of text include non-standard usage by: performing at least one search restricted to a first set of one or more data stores indicated to have relatively more reliable language usage in a language of the strings of text; and performing at least one search restricted to a second set of one or more data stores indicated to have relatively less reliable language usage in the language of the strings of text; wherein a relative proportion of matches from search results of the second set compared with the first set is used as an indicator of non-standard usage; providing an indication that a string of text includes non-standard usage, with one or more suggested alternative strings of text; and providing, with the processor, one or more examples of usage of the one or more suggested alternative strings of text.