I get frustrated when stuff like this happens for two reasons. First of all, it makes Christians look kind of crazy or weird (and frankly, really gullible/stupid when it doesn't happen). We all know that often an entire people group is judged by the most outspoken people of that group, even if those people are not accurate representations. Second, I hate the reactions of other people. I heard this being made fun of on the radio today. In the article above, it says that there are people who are mocking the idea by planning anti-rapture parties. I hate how something like this diminishes the impact of the truth for many people.
I do believe that Jesus is going to come back. I do believe that there will be judgment. The Bible doesn't give a detailed play-by-play of what's going to happen, but I think there is definitely an outline. Could Jesus come back on Saturday? I don't see why not. But instead of spouting off end of the world stuff, you know, "repent for the end is near," why don't we show people through our actions how Jesus can change someone's life right now? Thinking about the end is scary. Finding hope for right now is wonderful.
P.S. Pastor Pete Wilson also wrote a blog about this: http://bit.ly/liNBdb. It reminded me that I had the link sitting in my email waiting for me to write the post. Peter Haas, my pastor, wrote an incredible blog with a brief summary of the different end-times views: http://peterhaas.org/2011/05/20/is-the-rapture-coming-this-saturday/.