Rare HTML Tags: How Much Do You Know?

To read the story you can see it here, but here are those rare html tags that Stansberry discusses in his article.

1. < cite >

2. < optgroup >

3. < acronym >

4. < address >

5. < ins > and < del >

6. < label >

7. < fieldset >

8. < abbr >

9. rel

10. < wbr >

It's quit interest to know how many of these rare html tags are being used by the webmasters. One webmaster that I know said in his 16 years web developing experience he had used , but never .

How often do you use these rare html tags?