If you don't have any issue with mint, don't bother changing distros. Distro hopping is not necessary to enjoy linux.
"move on to something else" once I got comfortable with the OS.
I would suggest moving on to another distro if you're not comfortable with Mint. The whole purpose of distro hopping is to find which distro is comfortable for you.
You can use guerilla mail to create a temporary email address, which you can use to register on twitter.