For a few weeks I've been promoting this one offer. I had many people sign up everyday but I started wondering if the affiliate company was cheating me. On some days I'd have people sign up and then suddenly in the evening it would stop. So one some days around 3PM to 7PM it seemed like people just stopped signing up. Small offer that I was making about $30 to $50 per day profit. Then yesterday I realized I had my Adwords budget was set to $20 per day. Duh!!! I felt like such a fool. I increased the budget to $100 and quickly spent it making me $80 in profits. Boy I feel foolish. All these weeks I would have been making more money! Well you live and your learn!