A: It depends. Does your old lease have a termination clause? Does it state the your tenancy reverts to a periodic term, such as month to month? If your landlord continues to accept rent from you, the general rule is that it is considered a month-to month, but your do lose the protection that a lease provides, meaning that you can be evicted with proper notice and procedure. If you do not pay rent you become a "holdover tenant" and can be evicted by a "non-payment summary proceeding". Send them your rent check and see what happens. If they return it uncashed, start looking for a new place to live.
A: For personal use, not an issue, but if they are displayed publicly, like in a product label, periodical or on a website, there are potential problems, especially if the photo contains the likeness of a person without their permission. It gets tricky. Why not take some phots yourself. thereby giving them implied permission? If you photograph a person, be sure to tell them what it's for and ask for their permission to use it BEFORE you snap the shutter!