1. A method, comprising: responsive to receiving a text input comprising a first word: validating the first word against a content corpus, wherein the content corpus comprises a plurality of words approved for display in an online chat room, wherein a restricted word that is not in the content corpus is restricted from display in the online chat room; validating the first word against a set of rules; and upon determining, by operation of one or more computer processors, that the first word of the text input is not validated against at least one of the content corpus and the set of rules: modifying the text input by replacing the first word with a first approved word from the content corpus; receiving input specifying to submit the modified text input; and outputting the modified text input for display in the online chat room.