Guestbook

Find out what your visitors think of your lens and your topic. Add a Guestbook module and let them shower their praise upon you. (It has a delete feature for the owner so anything you don't like, GONE).

You can choose whether it's only logged in Squidoo members or if anyone who visits your lens can leave a comment.

Comments can appear straight away or you can moderate them.

My suggestion is you tick the box for only allowing logged in Squidoo members to comment (unregistered people will be promoted to sign up for a Squidoo account, and you'll get $5 credited to your account once they themselves hit $15 in Squidoo revenue). I also recommend setting "When should their blurbs be approved?" to Ask Me First. That way you can keep track of what people are saying AND it keeps potential spammers from vandalising your lens.

Something else you should know... when Squidoo "asks you" to come and approve the submitted blurbs it will give you a link. That link will take you straight into edit mode (provided you are logged in). You must then click on on your Guestbook. Only then will you see the yet to be approved (or rejected) submitted blurbs.

After clicking on "yes" you will then need to save the Guestbook module. And also republish the lens before the new blurbs will be viewable to the public.

Only put a guestbook on a lens that you think justifies it. One that REALLY needs it. If you had 200 lenses, each with a Guestbook, and you start getting feedback, can you maintain checking them all? Obviously you don't want spam, useless posts or uncalled for criticism in your Guestbook. You need to find the time to keep on top of it.