Good....they provide a service to people, just because you may not like something doesn't mean you should ban it for others when it doesn't even do any harm to anybody
my daughter receives email from them all the time--they have spytracker, adware and such--her computer is really messed up because of them--other than that on that subject I keep my opinons to myself as I do political opinion--too much chance of heated argument for or against either--even on a sight such as this
Very bad.
Eventually, they destroy a person's ability to have real intimacy...and therefore destroy the possibilities of really great sex.
Also, eventually, watching them will decrease a man's ability to 'perform.'
Ill have to say bad... there is no seceruity on them and kids can EASILY EASILY go into them.... just because they say you have to be over 18 clock agree or cancle doesnt mean thats security... A kids not going to look at it and say... "Oh no im not over 18 i better click cancle"... So i think NO , not until they have better security.
Good: gives momentary pleasure (often followed by guilt and remorse).
Bad: trouble with significant other; becomes adictive; AND most such sites provide "bad cookies" that snoop around your hard drive, cause your computer to crash, AND provides information to I.D. thieves.
Take your pick: good or bad.
I can live without them, and my computer thanks me.