I run an arcade site. Purchasing traffic is common among webmasters of these types of sites. I was wondering if purchasing traffic can impact, negatively or positively, ones SERP rank over time?
Depends what kind of traffic it is. If you are purchasing a spammy crap tarffic then yes it can show bad effect on serp. If the traffic is neatly done and of quality then it can not just improve serp but slightly help in pushing up the alexa also. Peace.