This product is a list of sample Weaknesses at various levels (2pp, 5pp, 10pp and a couple at the new 15pp "severe" level)
It looks like the authors have basically ported Disadvantages over from another popular superhero RPG. Unfortunately that other game has a different concept of what a weakness is. Some of these listed here are no more than personality quirks that at best don't really hinder the character and at worst are just excuses for anti-social play.
A lot of Weaknesses are poorly thought out. For example, this PDF lists both "Secret Identity" and "Public Identity" as weaknesses. There are some duplicate weaknesses that differ only by name "Arch Enemy" and "Hunted", and "Body Language" and "Easy to Read" spring to mind.
It rounds out with a list of phobias a character can have. Or rather a list of things a character can be phobic about. It would have been nice if this had actually listed the phobia names.
Apart from an excellent looking cover, this PDF is basicaly laid out to Word document standards - no internal art or layout of any kind.
On the whole, it's hard to justify the $5 pricetag for this, and that's not something I'd say often about PDFs on RPGNow.
LIKED: A couple of these Weaknesses might be useful if porting over a Champions character to M&M. But serious GM discretion is advised if you let your PCs near this stuff, otherwise you're going to wind up with weakness lists the size of your arm.
The cover graphic is simple but really striking.
DISLIKED: Using the weaknesses in this PDF will go against the original M&M design philosophy of one or two major disadvantages. Ironically the author seems to realise this, as they point out on the first page that "A Weakness that doesn't hinder the character is no weakness at all." Unfortunately they seem to have ignored their own advice.