I have a huge cement column in the middle of my loft - it was painted with chalkboard paint and I left it up to people to write whatever they'd like. I'm not sure when it started happening, but it turned into a guestbook of sorts - people left all sorts of nice messages after I hosted a couple of people, dinner parties, etc. It's starting to fill out nicely:

I was reading some of the notes tonight at dinner (I actually hadn't noticed a couple of them until quite recently), a few things struck me:

• Nearly nobody signed their messages (although from context, I know who signed what)
• I have a lack of "OmG Had a greaattt time last me, call me, xoxoxoxox" tags. If I had a few of those, people would be all like, "Dag, he's hot stuff." But they're all innocent postings, like, "Thanks for the dinner party!" Shame, shame. 

By comparison, last February: