Question-&-Answer sites are the platinum-standard for laser-targeted, ORGANIC, Buyer Traffic generation fodder for personal profit projects or impressed into employment on behalf of the satisfaction of paying clientele. A writhinh morass of answer-seekers, these sites are akin to fire-riddled high-rise block towers packed with individuals screaming for firepersons attuned to the frequency of their personal, specific conflagration.
If your hose is the one that puts out a screamers' fire (i.e. your answer provides spectacular relief from the source(s) of their affliction), you'll (theoretically) a new fan; a satisfied, pre-qualified BUYER willing to simultaneously clickthrough to your target URL AND provide credible Word-of-Mouth to their immediate Circle of Influence (others who happen to trust their recommendations and would buy according to them - just what every Marketer needs!).
Part classified ads site in the attraction of those looking to purchase solutions to long-term, pervasive problems, and part article directory for the amount of high-quality content published within the innards of these sites. A major reason for the level of answer quality stems from the userbase itself; don't think that you'll be spamming the proceedings to death as both reader-rating systems and blocking algorhythms discourage low-quality entries and promote only the most-helpful or information-laden answers. Spammish, OBVIOUS Affiliate Marketing-driven answers are roundly drubbed and soundly-nulled, with only the hardiest, most robust of postings gets Buyer Traffic all day long!
Question & Answer (Q-&-A) Website Listing
1) https://letsdiskuss.com (Indian)
NOTE: These listed sites are well-suited to traffic-driving for commercial purposing. Research with an eye to uncovering lists of sites for your projects.