The frontpage currently has a banner up where people can leave a heart with a comment when they have finished their donations. The comments will be cross-posted here.
However, you can also post on this thread any time, especially with longer explanations of where you have given this year, and why.
Lovely to hear that you are considering RP for your donations next year. I work there in the development team.
What convinced you that RP might be a good option for your donations, if you want to share?