If you never make any adjustments in your advertising, your sales will eventually decline. Okay, which get just a little grouchy once in a while--don't every one of us? Some advanced topics will not make sense without base knowledge. Have you ever tried Activity Groups? They're a great solution https://ban-tho-dung-govuong26814.jts-blog.com/13814936/the-truth-about-paid-online-surveys-an-issue-and-answer-session