I think Pinterest would be a great way to get the younger generation into quilting. If a store or brand started a Pinterest board featuring some cool quilt designs, people will see them and say, "How can I make something like that?" Young people want to see the result, so they can know if it is something they want to replicate. Then they will start getting interested in making their own designs as well.
Young people surf the web incredibly fast, and we need pictures that grab our attention. Then we need to know how a cool thing was made, be it a hairdo, a centerpiece, or in this case a quilt. Pinterest is perfect for this.