[Feature Request] Filter out "seen" pictures

As the title says, I suggest adding an option to be able to filter out seen pictures.

Nope. For the same reasons given to a similar suggestion in this thread: The relevant data is not stored on the server but in the client (i.e. your browser).

If you really want it you could use a browser plugin like Stylish and use some simple css to hide it:

.thumb.seen { display: none; }