I don't fully agree with you Palmer.
The thing is you gotta know what your doing, AND be lucky that no one is using the searched name in their signature
the search engine shows those in the results too.
The best way to search is, in my humble opinion,
"search for all terms" +
"Display results as : Posts" +
"Return first 1000 characters of posts"
In this fashion you can "CTRL+F" the results and in most cases eliminate the "name in signature" posts