Hi there! At keypup.io we mostly use Reddit, Twitter, Product Hunt and Indie Hackers.
I particularly like Indie Hackers and Product Hunt because the community is benevolent and supportive. There are a lot of software developers which is our target audience.
Choosing the right social media platform is important for the products/services type you offer. Hence for B2C business types: FB and Instagram are best, B2B Business Types: LinkedIn is the best, C2C Type: Twitter, FB and Insta and platforms like Craiglist, OLX, are the best.
Facebook was the most commonly used social media platform among marketers worldwide. According to a global survey, 93 percent of responding social media marketers used the network to promote their business, while another 78 percent did so via Instagram.