Now textcoins are enabled in server-side (headless) wallets and are available to developers.

Here is the doc about sending them: https://github.com/byteball/byteballcore/wiki/Sending-textcoins

Now, any service that has email addresses of its users (that is, almost any service) can easily mass-pay them using just email addresses.

Textcoins are also easy to integrate with chatbots.  For example, a telegram bot could reward its users for certain actions, e.g. for taking surveys or writing reviews.

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Lastly, our own cashback program now supports textcoins: merchants don't have to update their order forms to ask users about their Byteball address, instead they can give us the user's email address and we send a textcoin.  Updated API description: https://github.com/byteball/byteball/wiki/Cashback-API