Reply To: Kosher Restaurant Review Lashon Harah

As to the question about toeles
There are a few issues
1) you may only tell the person to whom it’s applicable. A public review is open for everyone so it would not be permitted.
2) the c”c, I believe in beginning of rechilus ninth perek Makes a clear distinction between responding truthfully and volunteering information. The first is often permitted. The second (to volunteer unasked, aka an online review) is almost always forbidden
3) the heter of
. תועלת הוא רק לעושה מעשה עמך והמבין יבין