I'd like to poll the opinions of the members on this forum regarding web 2.0 platforms for use in Mini-Nets or linkwheels. When you make a new network of web 2.0 properties, which platform is your favorite and why? We're looking at both ranking potential and back-link authority here. I'll start: My current favorite platform is Wikidot, as it often ranks well and has a more authoritative look to it. What are your favorites?