Congrats @Joshua Hughes
I have had a ton of luck with apartments.com (they bought Cozy). I list my rooms for rent here and then they put the listing on several of their affiliate sites. I get a couple interested leads a day.
Apartments.com is also where I have tenants fill out a background and credit check, set up automated rent payments, and upload renter's insurance. It's pretty sweet and free for me.
I also have some nice auto messages I use to do the initial "screen" to save my time from the tire kickers and the "is it still available" annoyers.
Here is my first message:
Yes it is! We require a 550+ credit score as well as a current job paystub or a co-signer who meets these requirements. The move in date is December 7th and is a month to month lease at $650/month (not including 50-70 a month for utilities). If all that works for you, when is a good time you can see the house? and what is a good number to reach you?
Here is my second message:
I have a couple questions for you to make sure its a good fit for you. Please answer these then we can go from there: What is your Job? Only you? Pets? Move in date? Estimated length of stay? Any questions for me? --
Sometimes my first message (if they seem more serious and put a little effort into their first response):
I saw your inquiry for my house at {{address}}. It is still available. Would you like to set up a time to see it? Than I go through those two messages above.
Tips:
1. great photos
2. good description. be clear what you require to cut down on wasting your time.
3. Pre-screen with email or text before you waste your time showing the room