some best traffic sources
 

some best traffic sources are:
Unique and Fresh content
Social Networking
Quality Backlinks
Article Submission
Blog Submission

You may also count PPC and direct advertising options. For example, Google AdWords can help build traffic for even newly launched websites pretty fast in most niches.

google adwords and forum posting were more used to increase traffic but social media is also important

Taking the advantage of the opportunity, can recommend Paidforumposting.com professional team of writers.
They offer article writing, blog commenting, and forum moderation packages as well to complement the forum posting - their team will help you to drive traffic to your sites.

Use Google's Keyword Tool
Think of SEO as an Opportunity to Create Value
Decrease Bounce Rate
Produce Quality Content
Create a Company Blog to Increase SEO Traffic

I think google adwords is the best way to get traffic

good traffic
 

I've never tried to register my web in google adwords, results were satisfactory

best traffic way is social book marketing article blog posting

Using google adwords or SEO is the best choice to get much traffic

Unique content, Bookmarking,Article submissions and forum posting....

I agree all those things you mentioned for increasing traffic. Always go0gle bot will crawl the fresh and unique content faster.

For best traffic you will have to build back link in these service

Social Networking
Quality Backlinks
Article Submission
Blog Submission

or try other PPC to get traffic

High Page rank natural backlinks.
Quality Content
Social Media
Social bookmarking
Press Releases
Article submission.

High Quality SEO, High Quality backlinks (link building) ,SMO are the best source of traffic...