As can only be expected, there was a much larger variety in names on RP servers -- while on average, 58% of names were unique, on RP servers that number jumps to a staggering 83%. But what is unexpected is the correlation between class, race, and name ultimately chosen to represent the character you play. Other information painstakingly investigated included represented regions, name origins, common threads between popular names, and an all-too-interesting look at the differences between negative, positive, and neutral names.
It's a fascinating glimpse into one of those things that players tend to take for granted. While you may think you're creating a name that's completely unique and carefully chosen, there's a strong likelihood that somewhere out there in the far-flung reaches of the global playerbase, there's at least one person who's had the exact same idea as yourself. Take a look at the full article for more interesting tidbits about the curiosity of character naming on Gamasutra's site.