I've been researching this comet Elenin alot as of late, and I've come to the conclusion it's a clever disinformation campaign. A former Nasa scientist James McCanney, states that this is disinformation to help hide the real Planet X's arrival. http://www.jmccanneyscience.com/
He goes into great detail about the science behind HAARP, the electric universe and how comets are not 'dirty snowballs' etc etc. There are other reasons I believe Elenin is fradulent, NASA (Never a straight answer) has a very poor track record when it comes to being honest.
Another person who expounds on this is Richard Hoagland and his excellent book "Dark Mission the secret history of NASA"
 
Ok onto Harold Camping, http://vcyamerica.org/blog/2011/05/09/is-may-21st-judgment-day
Jackie Alnor of Apostasy Alert Radio Show, at the Rapture Ready Radio site on Blogtalkradio
states Camping is 65 million$ in debt, which he feels is no big deal since he will no longer be around to worry about it. Clearly this man is not thinking rationally, and is leading millions astray. I personally believe this will be the catalyst that will fulfill 2 Peter 3:3-4. The MSM is already eating this up, and even the atheists plan to hold a party "the death of Christianity" on May 22nd. Christians will be mocked over this fiasco, but I do suspect God has a surprise of course in store for them. Possibly a rapture very soon afterwards.