I agree with developers. If you want to have plenty of traffic, you must keep up the good content in your site otherwise any SEO techniques wouldn’t be of great help. I personally rely on mouth-to-mouth marketing for my projects.
If you don't have a lot of money but a lot of time, use Bum Marketing strategies, which in short is to find long tail keywords (keywords with more words so they are easier to position in Search engines) and start writing articles and then link to your blog. You can search for the bum marketing method on Google.
You can get traffic without SEO by using the following free methods: - join social book marketing - join social network - use free traffic system - use free classified ads - blog posting - article submission These methods can help you.