True that some agencies are much better than others... but I don't believe that anyone can promise a viral strategy... unless they put up some BIG money and prizes to support it.
Kuyiqiniso ukuthi amanye ama-ejensi angcono kakhulu kunezinye... kodwa angikholwa ukuthi noma ngubani angathembisa isu le-virus... ngaphandle uma bebeka imali ethile ye-BIG nemiklomelo yokuyixhasa.