NO registration is needed to post a Comment here. Just click "comments" and write away! Google will give you 4 choices before you publish your comment, including registering with them; but don't bother, unless you're already a Google member. Easiest thing to do is to check the option "Name/URL". This lets you sign your name to your comment....a good thing! If you have a favorite website you want to tell others about, you can add that, too.
By the way, Laura has also set up an account on Classmates.com, so if you want to check that out, go for it here. FYI- they have a free account that's pretty limited but will be happy to take your money for more access to more features.