I chuckled at top keywords from search engines. Futanari.
Your theory on the 25% bounce rate is interesting, but I wouldn't say grim or what not.
Bounce rate is mearly one measurement, one must take into consideration all measurements. Using
Alexia and
Simialir Web. Overall the traffic ranking of Fakku! is actually up compared to last year, and while it is dipping slowly, it is no "mass exodus" that was claimed by a handful of people. # of page views per vistor and time spent is pretty much the same, showing people who do use it, still do. Bounce rate could also mean, users just hitting fakku! seeing no new uploads or notifactions for the profile and leaving.
Now once Fakku! goes full legit it will be interesting to see the analytics.