The photo of the spots indicate Tomato Bacterial Spot. This is caused by wetter and humid weather, and also can indicate watering the plants from overhead. Most people prefer to remove the spots prior to eating. More information at these links:

http://www.ext.colostate.edu/ptlk/1400-4.html

http://frontrangefoodgardener.blogspot.com/2009/09/tomato-bacterial-spot.html

The missing fruit photo indicates Tomato Blossom Drop. Unpollinated flowers dry up and fall off the plant. Caused by cool night temperatures below 55 degrees while the pollen is trying to develop, and also caused by inconsistent watering. More information at these links:

http://www.ext.colostate.edu/ptlk/1835.html

http://www.colostate.edu/Depts/CoopExt/4DMG/VegFruit/tomat.htm

http://www.ext.colostate.edu/mg/Gardennotes/719.html

Other helpful information of tomato problems:

http://www.ext.colostate.edu/pubs/garden/02949.pdf