Anonymous Texting Service

My Stake Presidency is wanting to hold a fireside for the Stake’s youth where they are able to submit questions via text anonymously. Was wondering if any of you had a positive experience using a specific service out there? I know Google Voice could be an option, but it needs to be tied to a personal number (and whose number then is used). I’ve also looked into Poll Everywhere, but I believe that limits responses to 40 unless we wanted to purchase the pro version (which we really aren’t wanting to do). Any other thoughts?

I would use something like Google Forms to create a place to collect all the questions submitted. You can keep them anonymous and all the information can be collected on a spreadsheet immediately. All the information is in one place and not in 100+ text messages.

https://www.google.com/forms/about/