Each user of the MySpace social network can designate a small subset of her friends as Top Friends, placing them in a rank-ordered list displayed prominently on her profile. By examining users' #1 (best) and #2 (second-best) friends, we discover that MySpace users are nearly indifferent to these two friends' popularities when choosing which to designate as their best friend. Other pairs of ranks (e.g., #1-vs.-#3, #2-vs.-#3, ...) also reveal no marked preference for a popular friend over a less popular one. To the extent that ranking decisions form a window into broader decisions about whom to befriend at all, these observations suggest that positing individuals' tendency to attach to popular people—as in network-growth models like preferential attachment—may not suffice to explain the heavy tailed degree distributions seen in real networks.
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