Error

Your themes CSS has:

.art-post ul > li {
    background-image: url("images/postbullets.png");
    ...

If you don’t want it you can add:

#mcTagMap .tagindex ul li, #sc_mcTagMap .tagindex ul li {
    background-image: none;
    ...

If you do want it you can do something like:

#mcTagMap .tagindex ul li, #sc_mcTagMap .tagindex ul li {
    list-style: none outside none;
    margin: 0;
    padding: 2px 0 2px 12px;
}

P.S. Thanks for posting a link to the page. Made it super easy to help.