I have website with technology related articles from 2-3 years ago.  Since then I added hosting related articles.Now, I am thinking of changing the niche and writing articles about the top 10 phones, the best networking devices, etc.The site is getting daily traffic of 300-400 visitors. Should I do it or start a new website for this niche? Wouldn't it be easier to rank on current site which already is an authoritative site?
Can I change a site's content niche for SEO, or should I start a new site?
seo;content