A lot of brands don't seem to know what to do on Facebook. Some post insipid updates like, "What's everyone doing this weekend?" Some just post boring press releases. But now, Kimberly-Clark's Scott brand has offered something useful: an app for industrial-strength Scott Shop Towels that you can use to tell your whining friends to shut up. The "Suck it Up" app, created by Colossal Squid Industries, went live today. Share it with the complainers on your Facebook feed.