Hi, I saw the following in another Spanish-English language forum. The original writer wrote: "Se necesita usar al diccionario muchas veces para definir palabras enigmáticas que no se usa frecuentemente. Mejor que se lea los periódicos que usan palabras formales del mundo." Somebody else corrected this to "no se usan" and "se lean" and when I asked why she told me that usar and leer have to agree with the plural words palabras and periódicos. Isn't this incorrect? If the original writer wanted to refer to the impersonal "you" wouldn't it be "se usa" or "usan" for an impersonal "they" but not "se usan"??