What is the function of a food blog?
The function of a food blog depends on the blogger's objective behind blogging. For example, some bloggers intend to create for themselves an online identity to help promote their food business or simply to 'brand' themselves for various purposes. Other bloggers might use the blogosphere to share their foodie interests with a community of like-minded individuals and to feel connected. Or it could be a combination of both. All that matters are sincerity, blogging-manners and an intention of wanting to give more than to receive.
With that said, a food blog functions as a platform for foodies to share and learn from one another. I love to share my best recipes so that others can benefit from it. Along the way, I also learn from my readers when they leave valuable comments and tips for recipe improvements, etc. I also talk about my experiences at restaurants to give my local readers a sense of the place before they embark on a visit. And perhaps also entice my foreign readers to visit Singapore! If I had to summarize the function of a food blog in five words, it would be "a space for foodie socialization".
What is its impact on the society?
Generally speaking, blogs have already impacted our society in many ways. Bloggers have an important voice on the Internet and would be considered as a more credible source due to the independent nature (there are exceptions of course) of their views. With blogs being a social media, I tend to trust it more than recipe websites now. For example if I want a recipe on chocolate chip cookies, I'd do a Technorati or Google Blog search rather than a generic search. Methods of search are evolving as we speak, so I see food blogs offering something unique to each individual; which a normal website or forum can't offer.
Get to know more about my food endeavors at http://curiousfoodie.wordpress.com.