Busquedas en internet
Today, GoogleGuy finally confirmed this without any shadow of a doubt: "If you
use an underscore '_' character, then Google will combine the two words on
either side into one word. So bla.com/kw1_kw2.html wouldn't show up by itself
for kw1 or kw2. You'd have to search for kw1_kw2 as a query term to bring up
that page."