The point is that you're not going to be home. So if you're not home and thieves want to rob you, does it matter WHY you're not home?They specifically say upcoming work trip, not holiday. The work trips at this place are almost always scientific conferences, and you want to drum up interest before so you can get the most out of it. The only social media account I have that is easily link-able to me is twitter where I talk about science meetings to try and get people to come to my poster or talk or whatever.