Earlier this month, we started the Google Free Friday series, designed to open readers’ eyes to search engines beyond Google. AOL happened on schedule, then I had to move Ask.com to this past Monday, as I got behind in writing as we launched our Sphinn social news and sharing site. Microsoft’s day was supposed to be tomorrow, but because I’m on semi-vacation this week, I haven’t been able to finish the prep guide to Microsoft’s search services. So, Microsoft’s day will now be Monday, July 23. Since that will be two Google Free "Fridays" happening on a Monday, I figure let’s get it over with and move Yahoo as well. Yahoo’s day will be Monday, July 30.