I have 3 serendipity powered weblogs now and on each one I install certain key plugins that help me promote my site and add useful functionality to it.
First up is spartacus.
Spartacus is an event plugin that gives me access to serendipity's online plugin and themes repository. With spartacus I can install additional plugins or change my blog design easily. Spartacus is one of the best features of serendipity and a similar plugin is not available in any of the blog or cms systems I have tried. Users of other blog systems have to first download plugins or themes from their author's sites and then upload them to their own server for installation. Spartacus lets you install plugins and themes straight from your admin panel.
