As per this doesnt work with multisite AS ADVERTISED
Set up multiple sites at google search works fine as long as they are not part of a multisite
will search both sites
Will only search mufirenet from mufirenet or jade campbell from jade campbell
So this does not work as advertised unless you mean only multisites with there own adddress, and not sub directory multisite.
So either this is broke or your advertising should be clearer (Honest)