Actually, the OPU is more updated OPU Blacklist, but it includes all links I come across, and is not paying attention to being reciprocal at all.
The links on Gamesandcasino may be a day or two behind…
The links on OPU are not anchored on purpose, so everyone can see the name of the site and know whether they already have them listed or not. For effectiveness, I recommend you anchor yours.