In this ever changing world of technology, we now have blogs and social networking. Do you find that they really work for increasing your business, or are they just taking up valuable time?

Is spending 15 minutes each day for each social network or blog you've posted up to date bringing in business or is it just connecting you with online friends?

What type of business do you feel should blog/social network and what types of business do you feel are unsuitable for this?

Is blogging/social networking created for just MLM business' or can not MLM business' gain from this form of advertising and marketing?

Just would love to know your thoughts.