It looks like Google is stepping up the game with a rewards scheme for those recommending Google Apps for Business.
Announced today, the referral program offers $15 per sign up.
The official Google blog post announced the Google Apps Referral Program -- currently only available in USA and Canada.
Once registered you will receive a unique referral link. Google will pay you $15 per user who signs up for Google Apps for Business for at least 120 days.
The Google Apps suite includes email, calendar, drive, docs, sheet, slides and is used by 5 million paying customers. Pricing starts from $5 per month per user (or $50 per year).