Sometimes, when someone writes something, someone else wonders if that first someone has gone into some more detail, somewhere else, at some earlier or later time (... to some up the matter).
It would be nice to have an internal search whereby results also could be listed for unique entries by specified posters (with context & highlighted search words). Other forums have such convenient searching. For those that don't, I've tried external search engines (here and elsewhere) with limited success -- the best in a remaining poor situation.
If there are foreseen security concerns, internal searching could be visible to members but not guests.
For security concerns from external search engine inquiries, returned text with members names and close spellings (due to typos or abbreviations) could be replaced by random posting numbers. For example, member Spaced Ranger returned as Poster3208 in the 1st reference, Poster0981 in the next. Of course, situations of member George Lucas writing about non-member George Lucas would need special logged-in tags or prefixes (visible or invisible) to differentiate between identities.