For Increase particular website traffic there are lot of many factor are working you can start by choosing right keyword for your website which are high search keyword monthly then set it on you landing page after that start off page activity for getting quality of bakclinks like, social Bookmarking, Forum posting, Aritcle submission, Document Sharing, PPT and PDF Submission, Press release etc.
Social Networking site are also best option for getting high traffic. so write and blog and share it on social networking site.