I was kinda sure I had a bunch of 'social bookmark'~like buttons under the posts, but I guess I confused that with my own blog.
But social bookmark / network links is the thing to do nowadays. Linking from signatures might draw some attention, but other sites linking to us through, for example, news posts is the way to go these days.
Send links of our translations and other exclusive content to other sites, both FF news / fansites and otherwise, making sure they cite us as the source fgj.
Anyone that has a weblog or livejournal should include a linky to one of our posts every once in a while, for great justice and whatnot. Prefer to link to specific, informative / exclusive posts instead of just a link to the frontpage, people will usually be more interested in going to a specific item than just a site's frontpage.
...that's all I can think of right now, but I'm sure you lot can think of more.