I stumbled upon VConnect's campaign to promote local businesses. It is tagged #PromoteNaija.
The idea is to promote local businesses by encouraging individuals to recommend great businesses they know of or have enjoyed their services and be rewarded for doing so.

The Prizes
You win #500 airtime for each verified business you recommend and #10,000 for each business that makes it to top most visited businesses list.

They even already mentioned some winners on their social media pages like here: https://twitter.com/vconnectnigeria/status/859721725180858369

We all know that SMEs are the lifeblood of any economy. Imagine a Nigeria where SMEs thrive. When you recommend a business, You give that business a bigger chance at succeeding. So, why won’t you #PromoteNaija.

There's a loophole in their strategy that you can also exploit. You can your own personal business and verify it once a message comes in. Easy #500!

You can get more info on their blog: http://blog.vconnect.com/promote-local-business-get-n500-airtime-reward/

or just start recommending businesses here: vconnect.com/promotenaija