RhymeBrain gets most of the hits from users who enter “what rhymes with <blah>” into Google. Other dictionaries only contain the roots of words; but rhymebrain sounds out the word as a human would, so it gets a lot of traffic from weird endings like “believABLE” and “hippopotamusES”.
In a flash of inspiration while going over some analytics, I realized that people are clicking on my site when the small snippet of text displayed on Google actually contains results like the ones they are looking for. Many of my pages had this out of pure luck, but others had random headings from other parts of the page.
So now my <meta description> for the search spider bait pages contains the first few answers. Example:
<meta name=”description” content=”Rhymes with chainsaw: arkansas claybaugh laidlaw rakestraw slaybaugh … [311 more]”>
In addition, the meta tag of the main page has a call to action:
“Go ahead: try to stump it. RhymeBrain works for the toughest words, when other web sites fail.”