Just a tip for those of you like me who have more than 1 person in a household who buys your groceries. Shared lists are a great way to keep your shopping trips synced up.

My wife & I each have our own RTM accounts, and we share a list called "Groceries". Whenever one of us notices something we're low on, we use the app on our phone to add it to the list. Then, when we're at the store, we know what we need.

This is especially great if we are just making a quick at the convenience store for some milk, the rest of the shopping list can still stay!