Hello Friends, I read many article related to seo then i find sand box word, but i can not understand what is exactly sand box, please friends tell me , i want to know about send box.
you mean sand box. that's when google's spam filter gets in to action and decreases website's web rankings to very low positions, in order to protect from spam. that usually happends in high competitive keywords. some say it can take up to 1 year to get out of the sand box, some say a few months.
Yes this is google sandbox, most of the new sites will come under sandbox. We can avoid sandbox from choosing less competitive keywords for site and try to improve your site contents.