Metaphor for Subject-Specific Databases

This was an aside in an ACRLog post, but I loved it!! As a metaphor for using Subject-specific databases instead of just Google:

"when I need shoes I go to a shoe store; I don’t go up and down the mall asking for shoes in every store"

Courtesy of Maura Smale http://acrlog.org/2011/03/02/in-praise-of-ideas/