If you're posting on the forum using a Mac, please note that your browser will not display the formatting tool bar if you use Safari or Internet Explorer. Safari doesn't have the proper support for the rich editing surface the formatting tool bar requires. Microsoft dropped support of Internet Explorer back in 2002/2003 and said that they will not develop future versions of IE for Macs.
If you have a Mac, we recommend that you use Firefox, which will display the formatting tool bar. You can download Firefox for free at http://www.mozilla.com/en-US/firefox/