lost a cent in myLot

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So, I came onto myLot this morning to find that i had lost a cent. Yesterday, my earnings were at .51 . Today, they've gone down to .50 . What could be the cause of me loosing one cent? Did I do something wrong? I did make a post with a link to another web page in it where it is possbile to join a forum, but that was what the post was based on, something on that page.