
There should be no issue as long as you are not trying to sell sausage; Jimmy D(ean) has a lock on that. While I have no reason to know anything about you, if I am referencing you, Jimmy D, its easier to remember and type as compared to
Xem_5 x I-1l wondrkin. However, a snappy user name does less for understanding your philatelic interests than the content of your posts.
If you get to 50 quality posts and start using the SCF messaging service you can chose to use the name you have attached to your email account or come clean with your real name. That is up to you. Me, I set up an email account in my user SCF user name and I been slowly moving all my philatelic email exchanges to that account.
That said, there are folks who are bad people on the internet, some who may want to come visit you after you post an image of your personal copy of US C3a or Columbian Sheet set you just came by. Or cause you other types of grief electronically.
My user name may convey an area of interest (you think?) but it does nothing to explain the reason I purchased last week a Falkland Island Dependency, South Stanley Island letter rate cover to England, sent February 1912, with SG ZU3, "South Georgia" hand stamp (SGZ2) used from June 1910 to June 1912. And, until I wrote this post there is no reason for any SCF member to think I or anyone else on the SCF would have one. A user name is actually limiting rather than expansive.
Welcome and may you enjoy your stay.
P.S. This would have been better to post in the "Stamp Community Support" topic area which is found here:

But Don, a moderator, reads all posts everywhere. And as his user name suggests he has interests other than philately. 31InternationalHarvestor, 31IHC or 74ScoutII just did not do it for me.