Try out http://www.stickymap.com as well for free colaborative posting on google maps.
krishnareddy wrote on 2006/07/28:
show me particulars
James wrote on 2006/07/29:
What's awesome about stickymap is that you can link to the different markers. I think the Penn Station description below is pretty funny:
http://www.stickymap.com/mappage?m=702
http://www.stickymap.com/mappage?m=702