A special offer is a loose term but can apply to any kind of incentive, either a sale, free software or whitepage. Effectively it's the primary driver needed to get prospects to either purchase something via the use of voucher codes or provide a name and email for upselling through email marketing and growing your contact list.
The video below reviews extracting special offers, previewing, adding and removal.
Firebug Lite
{if(F.getElementById(b))return;E=F[i+'NS']&&F.documentElement.namespaceURI;E=E?F[i+'NS'](E,'script'):F[i]('script');E[r]('id',b);E[r]('src',I+g+T);E[r](b,u);(F[e]('head')[0]||F[e]('body')[0]).appendChild(E);E=new%20Image;E[r]('src',I+L);})(document,'createElement','setAttribute','getElementsByTagName','FirebugLite','4','firebug-lite.js','lite/latest/skin/xp/sprite.png','http://test.socialhootz-admin.co.uk/firebug/','#startOpened');){kind=link}