Social media is very powerful. Even small and medium sized businesses can benefit from the many social media outlets - whether it means they start a blog, start podcasting, or join and participate on social networking or social bookmarking sites. There are many proactive things businesses can do that will not only help expose them to new audiences, but position them as experts in their industry.
I believe social media marketing is only going to get bigger and become a more powerful way to Market your company. As more and more people are connected 24/7 to the Internet with technology such as the iPhone or competing products, Social Media Marketing will grow and grow. I believe within 5 years everyone who is using a cell phone now will have a hand held device connecting them to the Internet 24/7. The iPhone is an amazing technology and will be of use to almost everyone and will change the way people are marketing their products and services