The similarity was jarring at first

My idea was a tag cloud based on the content of the author's blog, while the other one seems to be a tag cloud of technology tools (not well weighted, Google isn't big enough)

Given the ubiquity of tag clouds, my "original" idea doesn't seem that groundbreaking or to be co-opted in this circumstance.

Note that this is one of my photos that I didn't place a Creative Commons license on, though I probably should have considering I was entering it in a cover design contest.