| 7:42 am on Jun 30, 2011 (gmt 0)|
You may have answered your own question. ;)
| 8:00 am on Jun 30, 2011 (gmt 0)|
Just because people are searching and your sites hitting #1, doesnt mean they're going to click it.
Perhaps look at optimising your description META info.
| 8:50 am on Jun 30, 2011 (gmt 0)|
They wrong at both ends of the scale.
For more popular terms they can be exaggerated by a factor of 10 sometimes.
Similarly for long tail terms if you see -1 or 0 interest, doesn't necessarily mean that either.
Use it as a guide, but the most accurate keyword data you can get by running an AdWords campaign. As long as you can afford to be on page one for a month (and your spend doesn't always have to be massive to do this) you'll get far more accurate numbers.
| 9:01 am on Jun 30, 2011 (gmt 0)|
Ive found that terms with around 2000, country specific, and exact match switched ON (most important) that its quite normal for me to get about 75% to 85% of that in clicks when at position 1 or 2 in the serp.
Exact match is the key to getting it so its not overinflated (in my experience).
| 10:34 am on Jun 30, 2011 (gmt 0)|
Compare impressions of the keywords on which you are no#1 taken from Google webmaster tool with the Google Suggestion tool searches. This data might provide an insight into correctness.
| 10:44 am on Jun 30, 2011 (gmt 0)|
I've done a comparison using AdWords impressions from my own campaign with the tool's approximate user searchers.
With both reports showing exact match, local (UK) volumes the keyword suggestion tool was showing 48k searches per month while I was getting 72k per week. Pretty big difference.
| 1:24 pm on Jun 30, 2011 (gmt 0)|
Its not perfectly accurate, but its the best estimate available (when compared to other keyword tools).