I loved inFAMOUS, so did nearly everyone else, and it sold great, so it's pretty obvious there will be a sequel.
Too bad I bought Prototype before getting inFAMOUS though. Prototype was extremely repetitive, and causing chaos was fun for the first half hour before getting boring, the boss fights were cheap and annoying, in fact most enemies were cheap and annoying, all I used was the whipfist move which was too overpowered, getting strike team after strike team coming after you was frustrating, the side missions were boring and repetitive too and to get an actual story you had to run about and consume certain people (who, might I add, kept getting killed).
The whole thing felt rushed (well it was Activision publishing it). I think I bought it because of that thing on destructoid on how Cole was a pussy and how cool the videos looked. Boy I was wrong.