User blog comment:Bocaj910/I'm Sorry To Tell You This... But I'm Leaving/@comment-1874924-20100820042917

It doesn't surpise me that Bocaj had been planning this in advance, but I happen to know that Sunshine wasn't, since she wasn't even aware of her approaching milestone until I mentioned it (at edit #1994 or thereabouts.) She's planning to use #2000 for a story update--if you know Sunshine's reputation, you know that IS an event--and the reason she has disappeared is that she presumably didn't have a story update in her back pocket at the time.

As for why Bocaj has more edits than Sunshine, part of the answer lies in the types of stories they write. Writing competition stories with character pages that have to be updated every chapter will ramp up the edit count pretty quickly. Sunshine also has a history of dropping out of sight from time to time for various reasons, whereas Bocaj's activity level is more consistent.