We do occasionally get 1-time posters who don't return for whatever reason. If the topic and post ask a legitimate question or bring up an issue of interest, the topic and post(s) stand. FWIW, HNI does not like to delete topics that have lots of posts or responses as a general practice. If it's considered of legitimate interest, the topic can function as research for others even if the OP doesn't return or appear to do so.