This plugin allows easy creation of nofollow links in markdown. Simply precede the link url with a ! (exclamation point).
Example:
[google](!http://google.com)
Will generate:
<a href="http://google.com" rel="nofollow">google</a>
Add lektor-nofollow to your project from command line:
lektor plugins add lektor-nofollow
See the Lektor documentation for more instructions on installing plugins.