multiple subdomains

Hi, If I have a www.domain.com website and subdomains are like www1.domain.com, www2.domain.com, and www3.domain.com, my question is, having multiple subdomains is a good idea or not? How many subdomains can we create for a particular website?

Hi people, Hi everywhere There are huge online companies out there who dominate organic seo traffic and ranking. Have reading interesting blog post on site Detailed how 16 companies rules the google seo results, very interesting what many people not knowing about these sites. This example...