Most forums other than social media lack the interactivity needed between a seller and a buyer. Remember for a buyer, so many factors must be considered for them to open their purse and buy the commodity on sale. Blogs offer a unique way where potential customers comment on a variety of issues and launch queries into products and services. The seller can easily take advantage of this opportunity to close a sale. Trusted bloggers can act as good referees who can easily marshal traffic to your site. Through their recommendations and views, bloggers can gain authority on some areas of business making them the ones with the final word on certain matters. Viral marketing is also an aspect of blog advertising based on the fact that information travels fast. Readers easily pick stories from one blog and take it to another and in no time information about certain products and services has spread all over. This can be very critical in marketing.