BOOT offered free flight. Should I take it?

Dear Readers. Your BOOT correspondent has been invited to an Asian capital to attend a marketing launch/PR event for an airline. The invite comes with an airline ticket and a hotel room. While on the trip I can also do a bit of business - easily justifying the time out of the office. So - should I take it? Should the BOOT be taking free trips from Airlines? There was a big discussion on this point over at Tnooz in May when BA was offering trips to Bloggers.