Can gluttony apply to more than just food and beverage (such as internet addiction and shopaholics)?

Seeing temperance is the virtue that is opposite of gluttony, I've been wondering if gluttony applies to more than just food. For example would an addicted tot he internet count as a glutton? How about a shopaholics who spend all their time shopping (even on week days when they are supposed to be at their jobs)? Would a teen who he literally stayed up until midnight everyday past his bedtime and going to sleep as late as 1 AM in the morning on school days because he is that hooked to reading Harry Potter be exhibiting traits of gluttony?