They ought to rename themselves to biomedical hacking. Biohacking in contemporary usage usually refers to homebrew laboratory-grade biotechnology (those involving PCRs, gene modification, a ton of biochemistry). The dangerous things forum is primarily about implants which falls under biomedical and neural engineering, not biohacking.

On a side note, I strongly do not recommend trying out any of the biomedical implants without a good reason. You can approximate magnet implants to a reasonable extent with a bit of superglue and RFID chips can be placed in rings and jewellery. Risk of infection aside, accidental nerve damage is very difficult to fix with our current level of understanding.