If we use black hat seo techniques, i think only google oppose it not other Search Engines like yahoo and msn. Google had banned one of my websites due to black hat seo techniques. but not other. What you think ?
Usually because the majority of black hat techniques target Google (Since they deliver the majority of the traffic) I think Yahoo and MSN are just glad someone is targetting them
People will not reveal those methods. More people start using it so there is a bigger chance of getting banned and eventually less money
IMO the other search engines has not as smart as Google and probably has not detected your black hat SEO techniques yet.
Don't forget that buying backlinks is blackhat in Google only Other search engines, don't care if you do that
Please take no offense to what I'm about to say, but you shouldn't have been using black-hat tactics to begin with. What you need to do now is clean up your site, resolve never to do it again, and then file a reinclusion request with Google. They may or may not honor it, but as long as you've demonstrated to them that you learned your lesson, they may be willing to reinclude your site in their index. I wouldn't be so sure of that. Chances are they just haven't gotten around to doing anything about it yet. Remember that each search engine uses its own algorithms and has their own priorities. Buying back-links for the purpose of ethically marketing and promoting your site is fine - even with Google. The search engine giant only cares if you buy the links for the specific purpose of manipulating its index (buying them to rank higher or alter your PageRank score).