I don't think its just a good way to bring extra traffic. I think it is an extraordinary way to bring traffic!

Social marketing has become such a popular technique to bring traffic and spread the word, that fewer companies can afford not to do anything about it! A media such as blog is not only bringing you closer to your clients, it creates a platform for direct communication. Search engines, as was pointed out earlier, love the blogs, and, compared to other marketing methods, are also easier to use on social bookmarking sites (assuming interesting content is posted).

I would have advised any hosting company yo run it, in spite of how big/small they are. Its just an amazing way to stay connected.