You buy bulk traffic to build brand -- that type traffic rarely converts.
Clicked traffic like affiliate tools, text links and some display ads on publisher sites, will covert depending on the traffic source. Be careful of buying overpriced ads on websites that inflate their their traffic statistics with a lot of bulk feeder traffic -- check their bounce rates with Alexa as an indicator.
SEO referrals and AdWords (most CPC [search placement] ) traffic converts.
Email (non-Spam) leads (click throughs) from opt-in lists and newsletters will convert.
If there is a proven (or disclosed) way to make 2%/ per Month
current ROI on internet ads everyone would be doing it
I know where to find 6 and 7 figure money for that ... Here come the pitch men
