Sure, one can do a search for O audio on this forum. But the search results are exactly as expected. Results for the letter O and the word Audio displayed in no intelligent fashion...thats the point. It's a mess.
Don’t use audiogon’s broken search. Go to google and type:
"o audio" site:forum.audiogon.com
Use the quotes to put “o audio” together as a phrase. Why this site can’t implement standard search is beyond me…