Originally something said to transition from one topic to another, nowadays (and especially among some younger people) it seems to be used as a rather rude way of restricting one another's ability to speak their mind at all.
Another, more informal, form of the word anyway, it is known as American English rather than British English, however it is still a word. (taken from Merriam-Webster dictionary)
misuse of anyway, never the less, an excuse to change topics, fuck offmofo
male:hey there seksy sugar!
bitch:anyways...
male:(well at least she didn't slap me)
bitch:anyways, before i bitch slap yo ass back to yo mo's
male:well why don't you just anyways yourself!
bitch:anyways...
Created in 2010 by Jevastus Destinus, this "word" means someone that doesn't have the slightest fucking idea what they'retalking about, but they're talking anyways.
Jevastus: Yo, you're a fag. I hope you knew that. :-)
Idiot: Umm.... no I didn't. But thanks anyways.
Jevastus: Yes you did, you fucking I-don't-have-the-slightest-fucking-idea-what-I'm-talking-about-but-I'm-opening-my-fucking-mouth-anyways-^_^ fag. :-)