Ron Paul is apparently executing an end-around strategy to win the GOP nomination: delegate targeting. The idea is that, even in states he does not win, by careful management of the delegate-selection process, he could manage to control a majority of actual delegates to the convention.
In states that do not bind their delegates (to vote for the nominee selected by the state's primary), these delegates could theoretically vote for Paul regardless of the popular vote total. In states that do bind their delegates, Paul's strategy is even more long-game: in the event of a brokered convention, the delegates could become unbound and then Paul could have a majority.
During the tumult of early primary season, the possibility of a brokered convention is often bandied about. There hasn't been one since 1952, but there certainly could be again. This year, Intrade estimates the odds at 26%, up from 5% two weeks ago. No doubt this is due to the rise of Rick Santorum. Super Tuesday will sort much of this out; if the Intrade odds remain this high after those primaries, I'll be really interested in this scenario.
However, even if one candidate locks up the nomination, there's another upside for Paul: "[T]he more delegates Paul controls, the more of an impact he can have on determining the GOP platform at the convention." True. Unnerving, but true.