By being on, you can take into consideration all the contextual triggers that are nearby.

FORBES: Foursquare's Dennis Crowley: It's Still About Growth, Not Ad Money (Yet)

Rep. Stephen Horn (R-Calif) asked USPS to submit within one week a master contingency plan that would take into consideration all systems in the agency and lay out what USPS would do in case of computer failures.

CNN: USPS can't promise mail delivery won't encounter Y2K bugs

When you take into consideration all of the money owed to cover future liabilities like Social Security, healthcare and education, then the US is actually in worse shape than Greece, says PIMCOs managing director and founder Bill Gross on CNBC during a segment on Monday.

FORBES: What a US Default, Downgrade Might Look Like

One factor that teams take into consideration when deciding to bid to become an NBA All-Star Game host city, is commemorative events surrounding the team taking place in a given year.

FORBES: How Houston Became the Host City for the 2013 NBA All-Star Game

One caveat for all these kinds of guests: we should clearly take hospitality and friendship into consideration, and your personal tastes may stray from the consensus view.

FORBES: Your Roommate's Guest: A Three-Part Series