Why don't I see all the text formatting buttons?
Blogger's text formatting buttons only officially work in Internet Explorer 5.5+/Windows, and the cross-platform Mozilla family of browsers (Mozilla 1.6+ and Firefox 0.9+). Meaning, we've fully tested them in these browsers. We recommend that our users use the latest release of Mozilla Firefox.
The hyperlink button is only present in Internet Explorer 5.5/Windows and newer, as well as browsers based on Mozilla 1.3 or later(Camino/Firebird/etc.).