Another name change means another post whoot!
Honestly though, Shiny Lyni (which is my username for everything now) came about in a kinda boring way. The first half of the name was because my original username here was Shiny Eevee, and everyone began calling me Shiny and completely ignoring the Eevee part sometime around 2008.
The Lyni part I can thank
@Ruko for; we were emailing each other during a period I couldn't access the site and he figured out my real name due to shenanigans. One thing led to another and we eventually agreed that Lyn was a nice, ahort nickname for me. I added the "i" at the end because it flowed better into a name I was testing out at the time, Lynigami (portmanteau of Lyn and origami).
I knew Shiny Eevee was likely taken in most places (and I didn't want to be associated with Eevee on all websites I went on, especially not on the non-Pokemon sites), and Lyni just felt too short. So I put them together to make Shiny Lyni, and it's been my online handle for at least six or seven years now I believe? I actually really like the name as it holds quite a bit of meaning to me ♥ occasionally I add a 14 at the end, usually when I'm making a side account or something, as I was born on June 14.
Another common username I use is Violyni, but again, that's almost exclusively used for side accounts. I'm surprised the name usually isn't taken, as I have a twitter and tumblr blog with that name (and I think a youtube account? Not entirely sure about that).