I developed a short survey to understand how people think about creating a digital business or product, using their knowledge and skills. It has to be short and straight to the point.
1) I need to check if the survey I created will reflect the idea research I'm looking for.
2) Where I can post it online to get replies (I already shared it with my network and friends and intending to run a Facebook Ad). Are there any other options?
I agree with the Mturk idea.
You can also consider giving away the product once the survey has been filled. YOu can also directly add it to as a 'Thank You' pagee after your opt-in. Once a user says yes/agrees you will find it easier to simply ask. The survey naturally has to be quick, benefit driven and a reward attached.
Yes, you can use survey monkey. While you may need to pay it is a good alternative. You can even select the individuals you want to reply by persona.
Let me know if you need any guidance or help with it all.