I have started a new site a business site for web site design and a blog for web masters and graphic artist's to take part in posting tutorials with a chance to win work but which would be better for this a blog or forum? the site is www.dragonstardesign.com
if you are going to know the people supplying you with tutorials already then a blog will do fine, if its wordpress you can sign them up as contributors and provide them with a way to show you work, but it they are going to need to post lots of bits and discuss it (more than 2 way comments on blogs) then maybe a forum would be a good idea. Forums are notoriously hard to get off the ground, but easy to install so maybe give both a chance and see which you think is more appropriate?