I've read here and on the Yuku Support forums that Safari does not support the WYSIWYG editor's tool bar. According to the folks over at Yuku this is a problem with Safari's not supporting some key elements needed to make it work. Regrettably Yuku has yet to create a BBCode editor for their signature editor/creator. The easiest way around this would be to create the signature as a new post then copy the code to the WYSIWYG signature editor/creator. You can also get around this using the WYSIWYG editor by typing the BBCode directly.

Below is a list of the most common BBCode elements and how to use them. Please remember to replace the ( and ) in each one with [ and ] or they will not work.

(img)the URL of your picture(/img) This will allow you to post a picture in your siggy.

(link)the URL you wish to link to(/link) This will allow you to place a link to another site or web page.

(font=Comic Sans MS)The text you want to be displayed in this font(/font) Allows you to change the font the text is displayed in.

(size=large)The text you want to change the size of(/size)

(color=red)The text you want to change the color of(/color)

(b)Text you want to appear bold(/b)

(i)Text you want to appear in italics(/i)

(u)Text you want to appear underlined(/u)

(quote)Test you want to quote(/quote)

NOTE: I do not have a Mac and have not tested this on one. If this does not work please let me know and I will change it.