@examplens, considering that @icopress advises not to put ref links in the signature, there is always the possibility of using a website link in your profile - that way you get some kind of visibility and the option of not having to send a PM to anyone even if they ask you for a link.

You can always mention that you would be interested in using someone's referral link for eXch in this thread and ask users who are interested to send you their ref. links over PM. None of you would be breaking any rules. Just don't post the links publicly on the forum.