1.   A gathering of live recordings from a band that was never fond of performing live might seem an iffy proposition.

2.   A takeover of USAir was an iffy proposition.

3.   But as the years go by, that is an increasingly iffy proposition.

4.   But the theater is always, of course, an iffy proposition.

5.   But these are decidedly iffy propositions.

6.   Even free throws were an iffy proposition.

7.   Even when it comes to going after the operators of Internet gambling sites, federal law has become an iffy proposition.

8.   For the better part of a decade, the hall of fame and museum has been an iffy proposition at best.

9.   I know that in any hearing you get to argue your side, and whether a judge orders something is a pretty iffy proposition.

10.   Petitions that circulate on the Internet are an iffy proposition.