Of course, you need to support your customers, but are foreign platforms really the best way to go? Limit your support activities to your own website that you control and it will benefit both you and your clients.
Participating in online forums all over the Internet can be exhausting. Not only is it hard to keep track of all possible sources, it may bring you unwanted trouble. You might, for example, run the risk of being accused of not providing enough support when you miss a post by accident.
Providing regular support on online forums can also stretch you to your limits. Reacting to user comments on foreign platforms can turn into a burden once your audience gets the impression they can reach out to you anywhere on the Internet.
Do yourself and your clients a favor and try to keep it as simple as possible. Stick to one centralized support page and everyone will appreciate it.