I sure hope that your answers "the" questions is not keeping guys from responding. If so, their loss. I answered "no" to a couple but I don't use those as a barometer of who to respond to.
I think it's always polite to respond to sent messages. And, if you decline someone but they keep sending then ignoring those is OK.
Good luck to you!
Please try to see CM as a place that gives you more tools to make more quality friends and - if the Lord wills it - someone special in your life.
At this point in my journey, I'm really more interested in forming friendships and learning about myself and the opposite gender than anything else. Once I figured that piece out, it's been so much easier to relax & respond to whatever God sends my way. I always reply to anyone who takes the time and effort to contact me. That takes a certain degree of courage on their part which I wish to acknowledge. I've made some really great friends that way...
Occasionally I will send an emote to someone who looks interesting, or maybe just to comment on something inspiring found in their profiles. Most of the time I get no response, but a few times it's evolved into a rewarding friendships. I appreciate most those who send a polite reply back. I can usually figure out if they want to continue or if that's all it is to be. It's like a simple acknowledgement of two of God's children noticing each other and saying "Hi.... Hope you have a good life! "
I do know other girls who don't reply unless they are interested.