I get the idea of tracking everyones where abouts would be a bit much but I'm talking my own personal experience. I've already been documented on staying with Andre through the customs agent that interrogated me he pretty much wrote down everything I said. I am almost 100% sure that i've been flagged and will most likely get searched/questioned again. So if I return 6 months after my first visit with a "local" would they not wonder why I hadn't seen him the next trip? I just don't want to get myself in any unnecessary "hot water" because I've lied on my Visa.