Twitter’s microblogging platform has incorporated the pan-African payment systems Barter by Flutterwave and Paga to its Tips service. Flutterwave’s Barter is a web and mobile software that allows individuals to send and receive money from around the world quickly and securely at low rates. Paga is an African payment and financial services ecosystem. Their consumer app allows customers to access and use money in the way that is most convenient for them. Flutterwave, meantime, has raised $250 million in series D funding, valuing the company at over $3 billion, making it one of Africa’s most valu…