Too much time on their hands

A friend of mine sent me one of those bizarre emails today about a Molluskan Zodiac. I'm not sure if she saw my post yesterday about the slug in the lettuce, but it is quite eerie timing!
However, someone has sat down and devised an alternative zodiac calendar based on invertibrates. Strangely there are only 11 'signs' for this calendar including a Barnacle, a Clam, a Limpet, an Octopus, a Squid, a Slug and a Snail.
If anyone is sad enough to actually want the calendar I can email it to them (I am a Barnacle by the way).
What amazes me is that someone actually has the time to sit down and seriously devise these types of things. Don't they have a day job?