POSITIVES
The Positives for this system are that it is Sony's next gen game console and will therfore have many publishers making games for it at least at first. It also the most powerful of all the next gen consoles and comes with the new Blue ray drive. Also like the PS2 the PS3 can play most of the old PS1 and PS2 games.
NEGATIVES
IT COSTS 500-600 DOLLARS THAT IS ENOUGH TO NOT GET IT. For the price of this system+games you could get both a Wii and a 360 with one or two games. Their has also been reports that the PS3 is a lot harder to program for there by making some companies not want to make games for it or as many. It's showing at E3 06 was not that good and actually raised questions from industry insiders of how well the console will be able to do.
The latest Sony system to come out was the PSP, which is a hand held game. It came out around same time as the Nintendo DS and the DS blew it out of the water in Japan and holds a lead over it in all other areas. We can only wonder how things will turn out between Nintendo's Wii and PS3.
V.S. 
Who will win the money battle?