URL is something like "http://global.factiva.com/ha/default.aspx", then it doesn't contain the "?" and concatenating the arguments directly would not make sense (idk this can actually ever be the case though).

URLs can also look something like "http://global.factiva.com/ha/default.aspx?arg1&value#someAnchor", in which case concatenating more arguments would also not work. (again, idk if this ever happens on Factiva, so use your discretion).