I've really had a lot of fun with my website.  It's been about 3 years since I started it and I learn more and more about it all the time.  One of things that I've used in the past and always enjoyed was a poll.  I post a question on my site and people can go on and vote.  It's fun to get the feedback and interesting to engage the readers.  Currently, I have one posted about my New Year's Resolution for 2010.  I think I'm going to use these more often... just because I love the feedback so much.  (Even the not very nice comments are helpful.)