Avoid targeting a specific group of people
When making your polls, try to include as many people as possible. For example, a poll such as "what do you think of the new park they put in on 3rd street? (ONLY FOR PEOPLE IN SIOUX CITY!)" wouldn't be wide enough (since only people in one specific city would be able to answer), and wouldn't be right for OVP. Another example would be "staff members, do you like working on PC?", since that would target only about 30 people or so, it wouldn't be a good poll to post.