It looks like they still do. From http://twitter.github.com/bootstrap/base-css.html#icons

<excerpt> How to use

With v2.0.0, we have opted to use an <i> tag for all our icons, but they have no case class—only a shared prefix. To use, place the following code just about anywhere:

  <i class="icon-search"></i>

</excerpt>

Yes, it looks like the docs are lagging behind the code. You just need to include the icon-something class in a tag.

Thanks for the tip. Even if I never use it anymore, <i> still means italic to me. The thought of using it for icons breaks 15 years of ingrained habit.

yeah, it's only their recommendation it doesn't really matter what tag as long as you have the class here is the selector

[class^="icon-"]