Twitter no longer allowing links to your Mastodon profile? Let's bypass that
raccoon.onyxbits.de
raccoon.onyxbits.de
It's not difficult to follow a redirected URL one hop to find its 301/302 location header and then ban the source URL as well as the redirection site.
IMO it'd be more robust to list your Mastodon profile as a slightly obfuscated string of text, like people have done to fight spam bots when listing email addresses. E.g. [@]User(at)home{dot}social
1. The age old privacy debate of letting the shorteners track you. 2. The url is, well, obfuscated.