The AFC Google Map plugin provides easy map navigation and displays geographical locations with your markers, polylines, polygons and layers.
Yes. It is absolutely free - download it from here.
This plugin uses quicktag functionality to insert content. WordPress version 2.0 has no support for quicktags when rich-text editor (TinyMCE) is enabled, which has been reported as the bug by plugin users. Right now, even if quicktags are not supported, plugin adds a link below editor text-area, so you can always use it to open tag insertion window.
It's easy - just use our forum on AFC website. There's a dedicated section called "AFC WordPress Plugins", where your feedback and requests are more than welcome.