As a bookseller it is important to become familiar with the winners of the various children's book awards; today's winner can be tomorrow's most looked for book, especially in the case of the Newbery and Caldecott Awards winners.
Tracking the award winning authors and illustrators also helps keep you aware of which new authors and illustrators may have a collectible value in the future. This can be especially true if an author's first book wins recognition. An immediate example that comes to mind: Catherine Called Birdy by Karen Cushman was the author's first book and was a Newbery Honor book in 1995, she then won the Newbery Award in 1996 for her second book, The Midwife's Apprentice.
Some of the children's book awards that I have found handy to track: