User blog comment:Jenburton/Coming Soon: Message Wall in Labs/@comment-34285236-20111027112856/@comment-13301-20111205195217

The Browser's search function? No. Long messages get collapsed and the browser's search function won't find anything inside the collapsed sections. Also, messages are paginated without stating "since (date 1) until (date 2), so it would be extra difficult to search archived discussions by date (that's how I label my talk page archives).

The wiki search is not helpful at all, since it's constantly broken and poor. External web search like google doesn't work at all since archived messages aren't indexed.