We did not participate because we didn't like the fine print. I'm never going to agree to exempt a resident from complying with the rest of the lease because they got rental assistance, and that's exactly what you sign if you agree to participate (material health & safety are excepted, but that's not good enough for me - noise and other rules are there for a reason). We also didn't like that you have to agree to extend the lease for a certain period, agree not to charge late fees, give permission for federal representatives to look at ALL of your records (not just those regarding recipients), and attest that the resident has not received any other assistance (how would I know that for sure to be able to sign my name to it?). We're happy that help is out there for residents who need it, but our lease is our lease - we'll never agree to anything that modifies it.
We did have residents qualify and receive funds themselves, as it should be. If they don't use the money to pay rent, that's fraud, I can still evict them as I haven't agreed otherwise, and their problems with the aforementioned fraud aren't in any way my problem (as opposed to being stuck in the middle if we were receiving the funds directly). I'm really pretty shocked to read this thread and see how many participated when the residents could get the assistance themselves without the landlord having to encumber their lease.