Bests & Worsts Reviews from Amazon

I hate it. It's the most annoying app I've ever dealt with but I have no choice if I want people to be able to privately message me. Popping up on my screen when I'm busy with something else? Stupid. If I read it it shows the other party that it's been read, so now I'm rude for not immediately getting back to them. There's enough of that with texting. This app is a giant pain.