I've been using this website for a while, probably for half a year now.
Let's start with the positive part:
-Muttr.com is a great place to vent and let go of your thoughts under the seal of anonymity. If you're a regular user of Muttr, you can create an account to keep your posts if you ever need them or if you were awaiting an advice.
-Advices! If you post something about your issues, there is often someone who will respond and provide you an advice or be proud of you if you made progress!
-Answers to your questions! You won't have as plenty answers as a specialised website tho.
-Friendship (?) with the regular members... Well, you can somehow chat with them in posts and well, sometimes it keeps going. You can be listened to and listen to someone.
Now, the negative aspects:
-Trolls, like any other website. You can just ignore them.
-Ads, lots of ads. It's recent, there wasn't ads before but just like trolls, you can ignore them