Today I've downloaded a new IM+ version, 4.0.2
It's far better than 3.x versions were, but there's still some things that are not perfect.
First one is VERY bad quality graphics used in emoticons. You should definitely replace this graphics for HDPI-devices, because right now it looks awful.
Second one is inability to turn these emoticons completely off (and "Add smiley" button in messaging window, too). Please add this option, there are some people (like me, yeah) who hate graphical emoticons.
Third one is actually a bug, occurring with messages in UTF-8 (unconfirmed and depends on client, problem confirmed to occur when using Mail.Ru Agent for Android).
Well, that's it for now.
I hope this post will not be lost in these messages and you will consider my opinion :)
UPDATE> version 4.0.3 still have these problems.
Please consider fixing them, because IM+ is perfect for me in most other ways (I mean multi-account support, history, notification system, etc.).
Device: HTC Desire Z (Vision_A07) / Android 4.1.2