[malandrew]

Define "helping out / getting involved", since that is obviously not the same as "free". It's important to be clear on expectations up front so neither you nor those who take you up on your offer feel taken advantage of.

Free is great, but it may require someone giving up on a decent housing situation and then have to find an alternative situation if things don't work out between them and you. When that happens, they are left trying to find a new housing situation in a city notorious for low housing availability.