.biz is good for optimization

.biz domain is good to rank in google serp..... I heared that .biz sites are not that much effect in google serp

 

is that a question?

 

any top level domain is good for serps. It only matters when type in is considered and click ratio is checked. i think people like more of a .com or .org most often as compared to a .biz

strictly as far as serps are concerned .biz play same as a .com would do.

 

Google doesn't care about the TLD. It's all about relevancy.

 

I won't effect your SERP but maybe it will effect your click ratio since people who don't recognise the TLD maybe refuse to click because of that.

 

It doesnt change nothing; domain is domain