Is it possible to get good FREE traffic to a website?

[me and you 3]

Yes.

Advertising services and products online is fairly easy. There is no 'best' way but it is to use all the affordable ways to get good results.

1. Free way – most people use classifieds such as

http://www.sellit-right.com (UK,USA, International) for services/ products promotion. You can Feature your ad there.

And http://www.craigslist.com (UK, USA).

2. Post your links to your pages to social bookmarking sites that accept it.

3. Have a signature link in various forums that points back to your site. Never spam.
Create a blog / mini site of your own to talk about your site using http://www.blogger.com

Keep at it more than 4 times (or more) online a week to see good results. People are interested when you keep them interested. If you stop advertising you lose potential sales and no one remembers you.