HTTP Compression use by Alexa Top 1000 | Zoompf
An in-depth analysis (graphs! data!) of how popular sites are using—or not using—compression.
Link archive: May 2nd, 2012
Highly optimized images for the web in 3 steps | pasz.nl/blog
Some practical advice for optimising your images on the web.
Internet! - Imgur
The Old Aesthetic.