Yes, Trinity Rep has not just one blog but two. One for their normal theater business, the other for customer reviews of their performances.
Their blog is TRC Blog. A list of the recent posts reveals the following:
Speak Your Mind! announced the re-opening of the Public Square, their customer review blog. The blog actually is one post per show with comments allowed and moderated to enable the customer participation. I submitted my review/comment with the link to the full review on my main blog.
If you are in New England, try to schedule some time to catch a performance at Trinity! You'll be glad you did. No matter where you are, you can at least keep up with what is on stage.