Google will count this in duplicate content so you got banned.there,s no legal issue in it.Just you got penalized by google..
This topic is new thing to me. Anyway, I think it's not a good idea to copy keywords or meta tags from other websites. You need to make respective keywords for your own site.
Yes. You can copy your competitor's keywords and key phrase. A lot of webmasters and bloggers do that. Just do not copy the content. lol Just be sure that if you copy others keywords, you can do a much better job and could overtake your competitor's rank. That is how SEO works.
I do that too, and yes do not really copy the content or else, its your prob. You can use others keywords but make sure that you use it more competitively than your competitor does.
That is correct. The better you use your set of keywords than your competitor's, the higher you will rank in SERPs. Good luck!
Yes i really appreciate with Bogs, it is not copyright business.Every keyword is free for use for any website,s webmaster. psjailbreak