Links and Updates for 2009-05-03

virtual functions in C++ overview: http://cppsource.com/2009/04/virtual-functions-in-c/ # working from NYC today # GE creates a holographic disk that stores 500GB: http://www.tgdaily.com/html_tmp/content-view-42177-135.html # Google ads support for Mercurial: http://tinyurl.com/d42dah # creators of free iphone book reader aquired by Amazon: http://tinyurl.com/czw76w # a look at the versions of MacOS X: http://tinyurl.com/c8ls3v # a personal comparison of Powerpoint…