Links of interest from September 18, 2011 through September 23, 2011:

“A lightweight, easy-to-use jQuery plugin for fluid width video embeds.”
Markdown to RTF Automator Service
An easy way to get from Markdown to RTF via an Automator Service. Hat tip to Lri.
CSS Prototyping
Stupendously great trick for working with styling CSS (especially typography) in the browser.
RECOLL: a personal text search system for Unix/Linux
Haven’t tried this on a Mac yet, but sounds impressive.
Monitor Wi-Fi with Lion’s hidden tool
A cool little wifi performance log built into Lion.