At times, landlords will send out forms to tenants asking for personal information. Unfortunately, sometimes supplying what appears to be harmless data that's being reasonably collected can be dangerous. Income, occupancy, and other data may be used against you. So be wary of revealing anything you aren't legally obliged to. If the landlord sends you questions, check with a Tenants' lawyer to be sure of your rights before you fill out and send in anything. While you are legally obligated to report certain information, there generally is no advantage in saying more than you absolutely have to.
Attention New York City Tenants: Get more information on Landlord Tenant matters at the McAdams Law main site here.