is flash bad progamming???

sum1 on lounge always saids that flash is bad and will infekted my pc if use but i really like youtube video (justen beiber is soooo hot and lady gaga is queen) so i have it installed! is this bad?

Yes flash is bad because of the loopholes and exploits in the programming.  It's the ultimate real time web software/programming atm, but it's untamed.  You can't live without it so whatever.  Go lady gaga and justin bieber.