I know it probably isn't for everyone, but for quite a while I've had code blocks styled with a border around them for easier skimming. This makes it very apparent what the (d/l) links are attached to. Here's the CSS if anyone is interested:

.code {
    font-size: 13;
    display: block;
    border: 1px solid #666;
    color: #040;
    padding: 1em;
}
[download]

Modify to taste.