A more mundane but equally compelling theory is that "secretshelly1" is a behavioral art project. A single individual (or a small collective) creating a manufactured mystery to study how internet communities respond to ambiguity. The "1" in the username could signify "version one" of the experiment, suggesting there may be other "secret" accounts in a series.
You might wonder: how can a relatively obscure username have any cultural impact? The answer lies in the concept of digital folklore . In an age where influencers aggressively push their personal brand, there is a romantic appeal to the anonymous user who speaks only in riddles. secretshelly1