i am confused about if i spin some article,will it work for my site and in SEO ? is it legal or not ? what are good and bad side of this thing?
It may work in the short term, but long term it would most likely have bad effects, also it could get you into problems with Google search.
I don't believe it's illegal, but is is a low value SEO technique. If you end up using an automatic spinner which is quick the end result will barely be readable by a human, this kills any chance of a link to your article and also damages your credibility, Google is also on to this and will at best just ignore your content. If you spin it manually you will get a much better article, the problem is that this is time consuming, almost to the point that it can be as quick just writing it again, you can always use the original article as 'inspiration'.
Ack! Don't spin your articles. that's way old now and you won't get much out of your efforts. you'd be better off creating your own content or if traffic is what you want, you could just buy them. ultimatewebtraffic and trafmasters worked well for us in the past.
Not a fan of spinning... Google will still find out that it's not the original and may flag as span still better create unique and quality content.
Spun articles ruin your blog readership. When you spin and article It will produce meaning less garbage which is totally useless for users and also very hard to read. Better write your own.