Greasy Fork is available in English.
mmmturkeybacon Ghost HIT Buster for Forums
Searches forum posts for HIT links, follows them, determines if the HIT is still available, and strikes the post if the HIT is a ghost or changes the link text to show the automatic approval time and number remaining if the HIT is available. Works with Live Update. Uses just-in-time link checking to reduce "maximum allowed page request rate" errors. Uncomment CHIME to receive an audio alert if there is a new HIT post.