I was told that you can make huge sales by creating campaigns with low bid prices and adding thousands of keywords. The logic being that the sheer number of impressions will get you more traffic. So I tried this. I made a campaign with 2000 related and semi-related keywords and I bid $.09. This worked great!... for a day. I thought I had it made but my impressions slowed to almost a dead stop. Does anyone know what is going on? If Google slows your ads down then how do people profit with this method?
Are your keywords still active? If you get a lot of impressions, but very few clicks, your minimum bids will go up very quickly. Once they become higher than your bids, your adverts stop appearing. Google have a Quality Score (actually they have a few, but that's another story) to stop people from doing what you're talking about. They want the search results that appear to be relevant to the searcher so that they'll keep using Google.