Are there other apps/services like this? I've built a website for referral exchange, and I'm wondering if it makes sense to include something like this. My initial focus was travel, but I'm thinking there might be room for this kind of thing. I have Google Express on there, per a user recommendation.
If there are other apps like this, the person offering the referral might use somebody else's referral for a similar service, or something else that meets their needs (e.g., a timely airbnb referral). You win, she wins, etc.