Blogs vs wikis

Blogs seem to be like writing an opinion piece or starting a conversation which others can join in. That's fine if you want the whole universe to join in. Wikis seem more constructive in that you can store information on a particular topic. I like that you can invite in contributors and it does not have to be a free for all with no real editing control. Some of my colleagues are are geographically distant from me. We think we will start a wiki to share the best resources for topics we are researching and to keep track of who does what and when. If we can keep it to a small group of people (for now), we have the chance to build this resource and decide if it is of value to others once it is completed.