Oooh, actually regardless of your personal choice, you ARE legally required to register your tenancy with the PTRB. And most landlords that havnt registered with PRTB are evading revenue!! You however are not required to accept rent allowance. So suck that up!!!
While I appreciate that it has been established that a landlord does not have to sign these forms why would they have an issue with doing so? The poster who said s/he doesn't accept them either is it just the assumption that those in receipt of RA are more likely to miss payments?