Complex sentence: In March 2005 Yahoo! purchased another photo sharing site, Flickr, and in May 2007 announced that Yahoo! Photos would be closed down on Thursday, September 20,2007 at 9 p.m. PDT.
Split into simpler sentences: In March 2005 Yahoo! purchased another photo sharing site, Flickr, and in May 2007 announced that Yahoo! Photos would be closed down in the future. Yahoo! photos will officially close down at Thursday, September 20,2007 at 9 p.m. PDT.