I just found a cool plugin that allows you to insert a screen capture easily in your new blog post. This plugin only works with Windows Live Writer, the best app for blogging!
You can download the file from here. Copy it to the C:\Program Files\Windows Live\Writer\Plugins (or on x64-systems C:\Program Files (x86)\Windows Live\Writer\Plugins) directory. Windows Live Writer will automatically detect your new plugin.
The picture below is a screen shot of the site where I've found the plugin.
