I had this interesting thought which I am sure can be easily defeated but definitely points towards the success of WordPress.
I was searching the web for something inconspicuous as the “iWrap” and I came upon some interesting results. While browsing the results and then switching back to the search results page, I realized that the first page had at least three results that were either related to WordPress or were on a WordPress blog. I repeated the search for completely inane search terms and had at least one result show up on every search I performed from a blog that used WordPress as the blogging tool. I have had this happen in the past with various other queries but had not quite put two and two together. So my hypothesis is that a WordPress blog or a link that is somehow related to WordPress, shows up on the first page of results on every search performed on Google.
Do you have a search term or phrase that proves otherwise?
[EDIT] Since there seems to be some that do not, conversely, what percentage of search results do you think has WordPress in the first page of results?