While I’m still skeptical about the comprehension and retention of text read using Spreeder (http://www.spreeder.com), a JavaScript-based speed-reading tool, they do provide a handy bookmarklet and Opera plugin that makes using the service more efficient. For the bookmarklet, simply drag this spreed! link to your bookmarks bar. Then, make a selection of text in your browser and click the bookmark.

Also, on the Spreeder site, be sure to take a look under the Settings menu, as well as the Advanced Settings. You can change how Spreeder reads your text, including placing slightly more natural pauses (which might help with reading comprehension).

More info here: http://www.spreeder.com/plugins.php

Thanks to Ryan Lanciaux for this tip.