What is better?

If I have multiple niches, is it better to concentrate each topic onto one website, or divide it into multiple, focused websites?

 

Better divide it. The sites will become more target and easier to rank in the se's

 

Different focused websites are easier to rank well than one site with different themes.

 

OK, great. Thanks.

 

Depends, sometimes different niches are directly or indirectly related and can benefit more being on one website. Remember, people forget you can target internal pages for different keywords and have them show up in search results. You don't need your domain name to only show in search results!

 

if you divide into many sites, you will spend more time, and energy to take care your sites, it is really hard work.

 

If you can Work a Long time then divide them .. if you can work only 2-3 Hours .. One only to Focus

 

Divide them up, that way, whichever starts earning for you, you can concentrate on

 

Agreed, you should build different websites and target different keywords with every website.