If you have up to $100 to spend per month, your best option is to work on developing exeptional content and growing your social media following. These methods will require more manual work than if you had a higher budget to spend on advertising.
Based on this, we recommend the following solutions for you:
CONFIDENTIAL: Viral Marketing Revealed - This guide gives you an overview on what you need to do in order to position yourself and your brand to go viral. Going viral can be one of the most cost effective ways of generating traffic if you can pull it off.