karb, 
I'm kinda surprised I need to say this here but to all the people that put out posts with their #Signal usernames or links:
Put them in your profile too!
I'm not just gonna randomly DM you.
And if I have a reason to DM someone I'm not gonna go through your posts to try and find if you have one.
If it's not somewhere in your Bio I'm gonna assume you don't have it.