It looks like a nice tool if you need scripting capabilities. For everyday use I prefer KDE's ksnapshot; mapped on PrintScreen in KDE.
It has all the features of maim (minus easy scripting) and more. Also it lets you select a window or a section of a window using your mouse. Of course things like capturing the decorations or the mouse pointer are there too.
Plasma Desktop users could also use Pastebin plasmoid in mix with KSnapshot.
Just drag the image from KSnapshot to Pastebin plasmoid and a few seconds later, your image is uploaded to an image hosting service and its url is copied to your clipboard, ready to be pasted anywhere you want.
It has all the features of maim (minus easy scripting) and more. Also it lets you select a window or a section of a window using your mouse. Of course things like capturing the decorations or the mouse pointer are there too.