If you have a very slow internet connection (which happens a lot when you're traveling or, unfortunately, live in certain areas of the country), the less data you use, the better. Data Compression Proxy is here to the rescue, sending all your non-secure web traffic through Google's proxy to cut down your data usage.
The extension is an experimental one, but it could help speed up your web browsing on your desktop PC, much like Chrome on mobile devices compress data to save bandwidth. The screenshot provided by the developer shows a 62% savings on bandwidth, which you can check for yourself after installing the extension at chrome://net-internals/#bandwidth. (That feature isn't working for me right now--data savings are being shown, but not the total %. YMMV)
As for how it works:
The extension sends all HTTP (but not HTTPS) traffic through Chrome Data Compression Proxy server, which uses SPDY protocol to speed up web browsing. Enabled state is indicated by a green icon. You can manually disable the proxy by clicking on the icon. When the proxy raises an error, it is being automatically disabled for 30 sec, so that the request can be resent.
It's at least worth a try when your web pages seem to be loading slower than ever.
[via Google Operating System]