This are the best techniques to increase traffic to your website :-

[seoinheritx1]

Forum Posting
blog commenting
article submission
directory submission

[AliceFreriksen]

I do agree with seoinheritx1 but we also do not ignore social media. Social media is one of the successful way to increase traffic on web. One more thing is also remarkable here that only relevant traffic can help to increase business ROI.

[devin15]

Forum posting is one of the easiest and fast way to get traffic to your site. The links in signature gets immediately approved because of its rich content. Hence, try to post quality replies to the thread and in relevant forum site.