Use some CSS to draw more attention to it!
Customizing the appearance of this button is much like styling the Share and Invite Friends buttons, with just some tiny tweaks.
/*Facebook Connect Button*/.ss_box .facebook_id_field_block a{color:#ff00ff; /*font color*/background:#ffff00; /*button color*/border: solid 1px #000000; /* border color, size, and line style */font-family: arial, sans-serif; /* font-family determines the web-safe font used for the button name */font-size: 14px; /* size of the text in the Facebook Connect Button */border-radius: 3px; /* creates rounded corners, for a more button-like look.
The larger the number, the more rounded the corners.
If you don't want rounded corners, change the border-radius to 0px */padding:5px; /* amount of space between the text and the border of the button */}/*Facebook Connect Button Hover*/.ss_box .facebook_id_field_block a:hover{background:#dd0000; /* background color of the Facebook Connect Button when you hover over it */}
As with the Share and Invite Friends buttons, you can change the Hex Values, pixel dimensions, border styles, and the font-family to suit your tab.
The above is the CSS that would create a Friend Invite button that matches your Share buttons.
Check out the following resources from w3schools.com for some sweet color and font guides:
Guide to web-safe fonts: http://www.w3schools.com/cssref/css_websafe_fonts.asp.