There are so many nice & big SONY games on PS3 those need to re-open online servers because :

1 - SONY must respect to old & new customers equal

2 - Serious players want to complete their Trophy lists

3 - Usually old players are more loyal to company

4 - So many players want to experience online multiplayer mode on SONY games

Some games those need online back :

1 - The Last of Us

2 - Uncharted 2 & 3

3 - Killzone 2 & 3

5 - Resistance 1 & 2 & 3

6 - Little Big Planet 1 & 2 & 3

Gran Turismo 5 & 6

MotorStorm (all)

Demons Souls

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