How "spicy" can avatars acceptably be?

I haven’t chosen my avatar yet (mostly because of the size reqs), but can I choose a (cropped or full) NSFW avatar, or should it be totally SFW? I’m not familiar with sites like this, didn’t even set an avatar on e621 yet, so I don’t know if it would be blurred/spoilered automatically for non-registered or SFW users or something along these lines? Tried looking at the Rules and FAQs but didn’t find anything on the exact subject. Sorry for bothering you with such a silly question.

No idea, but i think it’s more important that you actually post something on here!