Earlier in my hosting experience, I got a phone call from someone who said he was in warmshowers, asking to stay the next night. I agreed and hosted him. He actually wasn't member and wasn't touring on a bike but had somehow gotten my number from a member. Since then, I have received several calls from people who say they "got my number through warmshowers." They always need a place to stay the same day or the next day and they usually don't mention anything about bike touring. I wanted to share this with people in the community because it seems like there are people who have accessed warmshowers and are using it as if it was a kind of couchsurfing group.
So I've removed my phone number from my profile in order to make people contact me only through the warmshowers email system, which verifies for me that they are indeed members. It also makes it possible for me read their profile and other online activities if they have any, before deciding to host them.