I love del.icio.us and use it on a daily basis. Today I had a quick look at the source code (HTML source) of the posting page and found a very funny
<div style="clear:both; height:1px; font-size:0; line-height:0; ie-sucks:yes"></div>
This is only funny if you're a web developer. Keep up the good work del.icio.us people!