How does Infamous 2 change based on the way I played Infamous 1?

It's been said that having certain Infamous 1 tropies will "result in changes in side missions, Dead Drops and dialogue". What are these side-missions, dead-drops, and dialogue, specifically? How significant of an impact does it have on the story-line/gameplay?

I ask because I beat the game before I had a PS3, so I don't have the trophies on my account. It drives me crazy knowing I might be missing out on some of the story-line.

The changes in the Dead Drops and Dialogues reference your karma alignment from the first game. Without spoiling too much here I can say that the dialogue in dead drops refer to your actions in Empire City depending on whether you were good or evil. Similarly a couple of conversations in the game with Zeke and Kuo.

This is the first I have heard of that side missions are also affected by trophies from Infamous 1. I have only finished my first play through of Infamous 2 on 'Good'. Maybe somebody who has finished the game on both good and evil can correct me if I am wrong but I don't think the side missions change depending on your Infamous 1 trophies. They are different based on your current karma alignment and whether you choose to do the Good or Evil Side missions.