There is a distinct possibility I may be misinterpreting this data but I've found a large group of keywords that appear to have no advertiser competition (according to Google's keyword tool) yet has a respectable number of monthly searches. Now I assumed this would mean that if I typed these keywords into google then I would find ZERO advertising competition by the side of the result listings but I was dismayed to find that there was some healthy competition for these keywords. Where am I going wrong ??