Essential serendipity plugins

You can install spartacus by login into your admin control panel and clicking on configure "plugins" under "appearance" in the left side menu (fig 1). On the next page you select "Click here to install a new event plugin" under "event plugins" (fig 2). You'll then be show a list of all event plugins and you can select spartacus from that list.

After I have installed spartacus I install the Google sitemap plugin. This event plugin generates a google sitemap each time an entry is published or saved. It also informs google each time you update your blog. A google sitemap is an XML file that links to each page in your site. The Google search engine uses the sitemap to speedily index your site. Since Google does not have to crawl your entire site each time it visits but just the latest entries, you save bandwidth and ensure that your newest posts are indexed by Google as soon as possible.

I then like to install the announce entries event plugin that pings social bookmarking sites like technorati and weblogs.com each time I post an entry.

Finally, the free tag event plugin is also useful because it allows you to tag your entries. The tags also end up as meta keywords in your blog's source thereby helping search engines make sense of your content.