I was thinking about buying it. Is it good for signatures and whatnot?

I wouldn't suggest buying Photoshop under any circumstance unless you're:
a. really wealthy
b. a great citizen
c. a dumb citizen
d. planning to make $ profit from PS

Buying Photoshop to make just signatures is a waste, just donate the money to my paypal --- you'll get the same bang for your buck basically.

u can get it for free from about 200 websites and as long as ur not retarded u wont get a virus. ^vouch what that guy said