I've long use "2015" appended to my initials for screen names. It has no particular significance. I started using it over a decade before 2015. I was signing up for an account, and I added my age then to the current year. Thus, I ended up with 2015 as "my" number.
Early on, it was no problem. It was still well in the future. Around 2015, it became impossible to use the number. Inevitably someone would claim the number for a username before I did. Now, 2015 is easy again to claim appended to my initials. Unfortunately, now when I use it, I get accused of being 10 years old.
88 was a cool number, but then Nazis came and ruined it. It was the equivalent of drawing that S letter you all did in high school. Edgy cool shit. They ruined my birth year and back to the future, and the name of a band I played in when I was a teenager.
Also they are pieces of shit in every other aspect, of course, specially regarding, you know, humanity.
Why yes, I was born in 1988 but luckily when I first started making usernames in middle school, I decided to use the random number 45 in them instead. Yup, good old 45, nothing awful or related to white supremacists associated with that number... Sigh.
My friend's birthdate includes both "14" and "88". I also remember being much younger and the '88 kids were all about "double infinity", usually stacked, and some even got it tattooed.
I'm not going to lie. One of my old reddit accounts had 88 in its username. Not because for malicious reasons though. It was a random number I came up with since the username I wanted was already taken. I got banned from r/comicbooks for that despite proof that I was NOT connected with any racist content.
My dad's birthday is August 8th. He has used 88 in his email addresses since back in the old @aol.com days. I tried explaining to him that he probably shouldn't but he's loved the number 8 since he was a kid because of his birthday.
It's impossible to talk about this subject without giving away my entire birthday, but - in short - yes, I was born in 1988. And the rest of the numbers in my birthday have other significant historical meanings.
People actually born in 88 forever subject to the username police. How dare you not be born with preexisting knowledge of nazis and their dog whistles.
I've sometimes included it in my usernames just to catch the fuckers who will cozy up thinking I'm one of them. I love flipping that script in pvp games.
You could make a kind of "community nazi index" by having a bot collect the usernames in threads and finding the ones with two numbers at the end. The really racist ones will have "88" statistically stick out.