There is a way to legitimately boost browsing speed by using server side compression. Opera Turbo does this. Their server acts as a proxy and talks to your browser in a compressed stream. I've tested it on the desktop and it does make a difference on slow connections. Since the data is compressed it also reduces your usage.
Disclaimer: I have not yet tried it on Android (I'm still waiting for mine). But if anyone wants to test it I'm sure a lot of people would be interested in the results.