Sleepycat Software, the guys behind Berkeley DB, had an ad in a recent Dr. Dobbs Journal with the hook “Where’s the sleeping cat?”

The rest of the ad copy told me where the sleepy cat was (the usual suspects—Linux, Apache, and so on), saying “you may very well have used Berkeley DB without knowing it.”

I like the idea of this ad. Perhaps Perl and a lot of other infrastructure workhorses could do the same thing—so “Where’s the Camel?”

Have you seen good ads for open source products?