I don't really understand your question... but "sucks" means "is bad." It's sort of a rude word, so you can use it with friends, but not with your superiors.

http://www.urbandictionary.com/define.php?term=suck

It's a bad but popular word, means 'bad', 'lousy', 'lame', as a verb.

Interesting that now I see the question is different from itself on the question board. You've edited it? Now I'm not certain what you are asking.