Those who are concerned about saving traffic, but does not want the pains of childbirth and manual settings, I advise to pay attention to Toonel.net.
To work this tiny utility only need Java support in your operating system.
The program works with data transmitted via the 3G / GPRS / DSL / CDMA, which is very important given the current proliferation of mobile Internet. Since the need for a Java support, the program turned out a multi-platform (works as in mobile phones, and in desktop machines).
Settings are minimal (no can do not do), and by default, the program is ready to work on first run (specify its default settings as a proxy in the browser - and forward). Without going into the intricacies of technology, I would say that the utility passes through itself and compresses data to HTTP, FTP, through SSL, POP, SMTP and IMAP, and can also compress graphics, which significantly reduces the power consumption traffic. The program is a portable (creates all-only one ini-file), I use it every day with the stick (standing at startup mount stick, and in its browser settings registered as a proxy), which allows not reflecting save sometimes up to 50% of the traffic (seen from screenshot).