Sitearm is my nom en ligne (online name).
Nom en ligne sounds classier than user name, screen name, login name, or nickname. These latter are mundane, whereas nom en ligne follows a historic tradition of elegantly named, special-purpose pseudonyms such as nom de plume (pen name) and nom de guerre (war name).
User names get assigned by third parties; noms en ligne are self selected. User names vary from system to system; noms en ligne carry across systems to indicate created, persistent, online identities.
There are many reasons for using a pseudonym. It’s about time we had a special name for a second name used for online branding. Use yours proudly!
A pen name, or nom de plume, is a pseudonym adopted by authors or their publishers. A famous example is Samuel Clemens’ writing under the pen name Mark Twain. A war name, or nom de guerre, is a pseudonym adopted by recruits in the French Foreign Legion as part of the break with their past lives.
Also See: Selling the Invisible