If someone else named Donnie wanted to use the 'Donnie's cool posts' tag, what do you think you might feel around that?
Wouldn't really care, I don't track the tag or anything it's mostly for my own organizational purposes. That said I mean, I think coming up with your own tags is part of the fun and Donnie's cool X is mildly branding for me. So while I won't be mad or upset if anyone does, I would just suggest coming up with your own thing anyways so you can be yourself and have fun