This summer, Starbucks (Nasdaq: SBUX) is taking aim at the Me Generation, launching frappuccinos that customers can design themselves. While that sounds like a nice innovation, its ability to perk up Starbucks' revenue remains to be seen.

Although the coffee giant is known for its vast array of customizable coffee drinks (as anybody who's ever stood in line listening to someone else rattle off a long, long list of drink attributes can attest), Starbucks' icy frappuccino drinks were previously only available in six predetermined flavors.