10. The system of claim 7 , wherein the reference words are provided in a specific dictionary that includes words associated with listings in a plurality of categories, and in a language dictionary including words of a selected language.
7. A system to process listing data in a network-based publication system, the system comprising: one or more computer hardware processors configured to provide a user with a graphic user interface to enter a query comprising listing data in the network-based publication system, the listing data including at least one entered word operated on by a spellchecker engine having the at least one word as an input and a corrected spelling as an output; provide a rule to define certain types of listing data; identify listing data that meets the rule; based on the identified listing data, override the spellchecker engine output and produce a set of suggestions of preferred words irrespective of any spelling of the identified predefined listing data; store in a database a list of reference words that relate to listings provided by the network-based publication system and that are words that are frequently spelled incorrectly; based on at least one entered word, other than the identified listing data, being misspelled, query the database and identify a plurality of correctly spelled suggested words from the list of reference words that are frequently misspelled to replace the at least one entered misspelled word, the plurality of suggested words to be communicated to the user.