The online servers for Gran Turismo 5, all three Resistance games, MAG and the SOCOM games are soon to be switched off.

MAG, SOCOM: Special Forces and SOCOM: Confrontation are first on the block, their servers being switched off on 28th January, noted Sony's UK support page (via CVG).

Resistance: Fall of Man, Resistance 2 and Resistance 3 will fall next on 28th March.

Finally, Gran Turismo 5 will be neutered on 20th May.