I believe that blogs do allow for the dissemination of information easily. We live in a digital age and people get so much of their information from the Internet. Blogs are just one source of information and are very popular because people can write freely on them. I think schools should use blogs more to disseminate information because they fit in with today's technology.
That is why most people should know that before they read any blog. If they are not sure about some of the facts people are putting out, then they need to look to other sources. In order to see if the facts are at least close or the same. If they are not then the blog might not be credible. Now a days things are so partisan, it is hard to get a straight answer one way or another.
Blogs allow for way much higher dissemination of information. We have seen countless of times how information gets across quickly on blogs and other similar sites like twitter. Anybody can go and be part of a blog, and information is always exchanged quickly and efficiently when any topic or argument is brought about.
Yes, blogs allow for the dissemination of information easily, because anyone who is interested in the topic can read the blog. Search engines also allow niche groups of people with interests to find a blog to communicate about a specific topic. Blogs allow for each person to talk about the things they want to to a world wide audience.
I think that blogs allow for even more communication from a broader audience if you allow it. Blogs have comment sections and people can even right a blog in reply to another blog so in a sense it is just another form of communication and not a replacement of a form of communication at all.