Telling whether a thread is any damn good on fakku is easy; quality is inversely proportional to the number of replies.
So once you see a thread clocking in at 34,911 ("Fakku Cafe' (sic!)"), 33,510 ("Say something about the user above you~"), or similar, you already know that quality will long have hit rock bottom. Generally, shit gets pretty dire at about 10+ replies. 15 replies? Time to stay the hell away. 20 replies and more? Make for the hills.
Want to know more? Consult the graph below.