Re: I've stopped using it
TB stores your email text so that a stemming algorithm can search it looking for word roots.
If you search for 'Weds' hoping to find Wednesday abbreviations it will also show 'wedding'.
If TB simply added a verbatim option it would make it much more usable. The filtering on search results is also very clunky. I have 10 years of emails and it's a pain to find anything without 20 clicks. Other than that TB is very good.