Replaces twitter profile images with their bigger version to make twitter.com look better on retina displays.
To install go to https://chrome.google.com/webstore/detail/retina-twitter/hgdfdmoaogekkpncleidmpddpijgeakp
Only currently replaces the 48 x 48px avatar with their 73 x 73px ('bigger') version. Bigger images are available but don't keep to the same square ratio.
Pull requests very much welcome.
MIT License.