Kudos to Ben and the rest of the Captcha team.
Today I downloaded the binaries for reCaptcha.NET for a web page that I was setting up and it worked out of the box. No recompiles necessary:
<recaptcha:RecaptchaControl
ID="recaptcha"
runat="server"
Theme="red"
PublicKey="YourKey"
PrivateKey="YourOtherKey"/>
Posted on 17 Sep 2008