No room to reply here!
But nope... I must have missed the similarity in names. With the single exception of coffee. I thought she seemed confused once... when she asked if I was a guy or a girl. I have a bad memory though... maybe I'm remembering it wrong?
So let's take a look at our imgflip user names. They each have three syllables, starting with a lower case 'n'. But I don't see repeating vowels or consonants... the last syllable does rhyme, though... "bot" and "knox".
Other than that, I think others (like me) might only confuse the names if they were too far away from the screen to tell the difference.
Even with glasses, I have to zoom in to differentiate the names of people when I use this website. I'm sure most people see just fine, but I don't...so I understand if there is some confusion.
Have I missed any similarities between "nottabot" and "nixieknox"? I hope so - I'm usually the last to know when I'm wrong... ;-p