t.co is Twitter's URL shortener. It exists to—obviously—shorten URLs for user convenience, but is also an important part of Twitter's infrastructure to prevent the spread of Malware through the network.

The key thing to note is that it's implemented in a way that clients can also display the URL tidily, and unobfuscated. This screenshot is from Twitter itself.

* The link ‘tpm.ly/mpEFB5’ was entered in the original message. This is Talking Points Memo's own URL shortener.
* http://t.co/ZgMhylk is the actual @href of the link, and users must navigate through this.
* When you hover a link though, we've also expanded the original TPM link to its full form, so users can hover to see exactly where they're going to end up, whether it's a tpm.ly, bit.ly, aw.sm or any other short URL.

The short aesthetic and branding benefit of a service's own shortener is preserved, the full URL is available to users, and the malware filter can do its job. t.co will redirect through tpm.ly, so any analytics they're doing through that service are preserved.

All three of these formats come back through the API in the `entities` section of a status (see: http://dev.twitter.com/pages/tweet_entities.) See `url`, `display_url`, and `expanded_url`.

Simple rearrangement of the desktop version using media queries.

We launched the new Twitter OAuth views today. I'm really pleased with the work we did on this.

Two friends who, as far as I know don't know one other, took the same shot consecutively in my Instagram feed.

Lights on Flickr by @kev/null/
http://www.flickr.com/photos/pixeldiva/5584254960/

If you thought the new iTunes window controls looked odd stacked vertically already, here they are misaligned in a playlist window. Not that it's in any way clear which way they should be aligned here (other than, say, horizontally.)

Horrendous.

DeviantArt has a really neat way to promote/encourage people to subscribe. The main banner ad is highlighted in the design, with a top-right ‘close’ button, suggesting you can click to remove the ad. Hovering on that reveals the instructions to join as a paid member. Much more subtle than inserting a full-time block of content into the design, but I suspect more alluring to the user, too.

Shows the result of including Twitter links in my feed reader.