Check out this link format post, the custom fields will only ask you for the title of the link, and the link itself. Then you can of course also add a description below, like this, using the normal textfield.
Tagged : Link
- NOTE: It's easy to make the regular text widget look like this. Simply wrap it in a div class called note, and you are done.
It could come in handy if you have some important announcement, or simply want to introduce yourself.