Generally speaking, what are the best options for marketing on a small budget - specifically marketing for SAAS / Digital Products?

Pay per click and other advertising options often require substantial investment to see decent returns. What are people’s experiences with low budget options such as blogging, viral marketing, social media growth…?

I understand there are no miracles and that ‘low budget’ plus ‘no work’ equals ‘no results’. But if long term success is the goal, what strategies offer the best bang for buck?

Thanks!