Left side of form not showing on page

That issue is being caused by your theme styles. If you look at the style.css file (line 1173) you'll see that it sets a negative left margin on all list items in the "art-post" div. That's the source of your problem.

[css]
.art-post li {
    color: #141414;
    font-size: 13px;
    margin: 12px 0 12px -20px;
    padding: 0 0 0 11px;
}

If you disable the margin property, you'll see that the form formatting is corrected.

screenshot: http://bit.ly/qqEjtT

You can try adding this to the end of your theme stylesheet to override that rule.

[css]
body .art-post .gform_wrapper li.gfield {
    margin:0!important;
    padding:0!important;
}