Strategy #1: Code well and do nothing special for mobile - The current crop of advanced mobile browsers are very good at rearranging content without being told how to by a developer...Making a good semi-liquid layout that has a min-width and max-width set in your CSS and em-based typography will work very well across a range of different devices and screen sizes.
Strategy #2: Make a separate mobile site - .. (although) it results in having two sites to user-test, maintain, etc
Strategy #3: Build mobile-aware adaptive sites - hardest to pull-off methodology... (but) future-proof as it tests features rather than sniffing browsers.
Smartphones can run full Web browsers such as Opera Mobile or Safari/iPhone, while in the developing world we see much lower-end handsets that don’t have an operating system but, if they can run Java they can use Opera Mini (a thin client for a proxy-based system that compresses pages down to about 10% of their original size before being sent to the handset for rendering — see our comparison of Opera Mobile and Opera Mini)
