i am a new mac user. what is the difference between a keyword and description? title? for example, a vacation to canada in 2009. if i put : canada vacation 2008 in the descriptions plus the city name--what is the difference if i use keywords or description? can't i search for words in either the title/description or keyword? what wld appear if i make a slide show? nothing appears if i print the photo--right? i am trying to organize and think i will use iphoto vs bridge in elements. when i want to do layers in elements, do you export to elements or drag onto the desktop and then into elements? thanks!