[Jimerson12]

Here are some list of factors which SERP depends on (Generally)

On page optimization
Content
Domain name
Frequency of updating websites
Domain age
IP
Domain reputation
Link building

The things which may have negative implication on SEO :
Having a lot outgoing or reciprocal links pointing to �bad� sites (like link farms) � can negatively impact rankings.

Shady practices such as keyword stuffing or using text that�s the same color as the background can negatively affect your rankings. Only an issue if your site gets manually inspected and you don't have a legitimate reason for it.

Frames negatively affect your rankings.