While I was in Australia last winter, I came across Pipedrive site when looking for a new CRM for a client. All the testimonials they show in their pricing page are displayed based on the IP where you are connected from. If you are in Spain, you will see something like this, if you are in Sweden this, or some Australian companies if you are in this part of the world.
GoDaddy knows that you are probably buying more than 1 domain within their tool. They take advantage when you are buying a new domain to ask you to extend the contract for another of your previous domains.
Codementor knows that there are more opportunities of having you sharing a referral link either when you are happy with their service, either when you have just spent some of your credit. Or both. After each session you might have with one of their mentors, a modal is triggered after you terminate the session, inviting you to get $25 free if you bring new users. In a similar way, Digital Ocean are doing the same but within their monthly invoices.
The team at Nitrous had a clever idea that later was implemented by Heroku too. Every time you create a new development ‘box’ in their platform, they will provide you a button that you can place in any of your Github repos. That button allows any 3rd person to deploy automatically a new development box in Nitrous just with 1-click.
Fiverr, this last christmas, offering a special promotion that can be listed between activating current users and getting more revenue in exchange of a piece of this revenue.
Uber had a smart idea to promote the use of their app… Even if you didn’t need one of their taxis. In summer 2014, they decided to sell ice creams just by using their app. You just have to order it as if you were order a taxi from their company