Well, it’s all complete garbage, of course. It’s fostered by the usual apocalyptikook nonsense.
Basically it’s the responsibility of the people spouting the nonsense to prove it, not anyone else’s responsibility to disprove it.
Actual astronomers have a lot better things to do than combat the latest kook fad; one problem is if you Google Comet Elanin, almost all you GET are worthless apocalyptikook sites.
There is an actual comet Elenin, but it’s not going to hit the earth, or affect us at all. If we’re lucky, we’ll get a good naked-eye show out of it.
http://www.skyandtelescope.com/community/skyblog/observingblog/112431829.html
There’s a long history of pseudo-scientific nonsense surrounding comets, from that cult that committed suicide because of Hale-Bopp, to people claiming the whole earth would be poisoned by the tail of Halley’s Comet in 1910-1911.
I checked that site out earlier. It doesn’t show up in the news search because it’s a blog and just another opinion. Though they do have some awesome armature telescopes, here’s hoping they keep us abreast of any new discoveries.
There is a tiny but none zero chance that it could collide with the Earth. It is classified as a PHO (potentially hazardous object.)