Dear Android app developers, please remember that your app may not just be used on phones and tablets, it could be used on television boxes as well, where we need landscape mode. Too many apps work in portrait only. It's doing my neck in.
You may think no-one would want to use your app at home if it's primarily designed for travelling, for example, but even that is not always true. Anyway, phone users sometimes prefer landscape mode, too.
I would also complain about lack of special alternatives to touch screen control, but that can mean a lot more extra work so it can be forgiven. We mostly have enough control with a remote touchpad, fortunately. Landscape support is not so hard.
Other rant: Bloody Dolphin browser keeps auto-filling form fields against my will and incorrectly - to explain why you might have seen my name in place of the subject title on my posts (before I realise and edit). I'm not that much into self promotion!