Limbo intercepting Brightkite check in's?

Why are limbo messages coming back when I've not signed up for it?

Also, the messages are conflicting with my check in's.

If I text in an address and Brightkite sends back a list of addresses, Limbo then captures the digit input and asks me if I want to "play a game".

For example, I get back:
Did you mean
1) Somewhere
2) Anywhere
3) Nowhere

So I send back 1.

Instead of "You've checked in to Somewhere" I get "Limbo: Are you trying to pick 1?"

Why are the two conflicting with one another?