Social bookmarking in WordPress
WordPress.com (the free blogging service, which I use) does not allow use of scripts in posting—a reasonable precaution. If you download the software from WordPress.org and install it on your own server, you can modify it as you like, and scripts are totally up to you.
So I’ve not been using social bookmarks (Digg, Reddit, StumbleUpon, etc.), under the impression that they required a script and thus were not allowed. However, a reader (thanks, Nikki!) pointed out, after looking at the WordPress FAQs, that there was indeed a way to install the social bookmarks. Thanks to her suggestion, I checked the FAQs myself and found this wonderful (free) tool: GetSocial.
I downloaded it, installed it, and now I can put social bookmarks in any post—though I’ve reserved it for posts that have been or are likely to be popular. Extremely nice, and if you use WordPress.com, take a look at it.