Shalom, JosyWales.
"Futurism" is a nickname for "Premillennialism," the concept that Yeshua` haMashiach (Jesus the Messiah or Jesus the Christ) will return in the future before a time known as the Millennium, a "thousand-year" period which defines the first 1000 years of the reign of the Messiah.
If you would prefer, it could also be considered "anti-preterism" in philosophical eschatology.
Both Hitch and Hammerstone above have hinted that pretribulational rapturism, which is but one branch of premillennialism, is the dominant viewpoint within premillennialism. However, there are also pre-wrath rapturism and posttribulational rapturism as well as partial rapturism branches. Of course, those who accept preterism - the concept that almost all prophecies were fulfilled in the first century - will object to ANY of the rapturism points of view. It all depends on how one treats the time period of the "tribulation."
Most say that the "tribulation" is a seven-year period that is yet to happen. Some say that it is a seven-year period that has already begun. Many consider the last 3.5 years to be the "Great Tribulation" in which most of the bad things that happen in Revelation will occur. A few of us, like myself for instance, believe that the "tribulation" is NOT a seven year period but is an almost 2000-year period that started in the first century but continues today and will continue into the future until the Messiah returns. I just simply do not equate the "tribulation" with Dani'el's 70th "Seven" (Dan. 9:24-27). Most do.
There's a nifty little book I got at WalMart titled "Bible Prophecy For Blockheads: A User-Friendly Look at the End Times" by Douglas Connelly (Zondervan, Grand Rapids, MI, 2002, ISBN 0-310-23588-X, softcover) that can help you sort all this out. I don't believe everything he believes, but he does a good job of explaining the various views without putting too much of a slant on things. Of course, there may be other good books that have been developed over the last ten years, but I like this one.
Hope this helps.