I had never heard of Airbnb before. Once I got on your site, I went to their site, clicked around for a while, tried to get the gist of it. Then came back here to comment because I still don't get housefed.
I don't think I should have to go learn a totally different site in order to understand the tagline of your site.
If you've never heard of Airbnb before, perhaps you're in the wrong place. Airbnb is a YC company and is one of the (if not the) hottest startups out there.
I don't think I should have to go learn a totally different site in order to understand the tagline of your site.