Obviously, scheduling these forums during finals week makes it difficult for students to attend, though certainly some have. The Chancellor has also promised to have additional forum(s?) in the beginning of the spring semester.
You can still participate without attending the forums. The Chancellor's office has created a blog to keep the community informed of what happened at each forum and to continue the discussions that come out of the forum. You can read it here
Unfortunately, this site wasn't included in any of the emails that went out last week to the University community, so it may not be well-known. I wasn't at the first forum, but it looks like UW Communications has done a good job of getting content from the forums onto the site and it's already collected a few comments.
Getting the ideas and discussions from these forums out in short order for the world to see and comment on is a good move on the part of the Chancellor. (It's something that ASM should be doing a better job on, too.) I don't know how the Chancellor's office will use that site in the future, but hopefully this is the start of a good trend from the UW Administration.