Even though they may encouraage some spam comments I think as a whole they are beneficial as they encoursge people to visit yoor site, people that may not have visited otherwise.

It is then up to the quality of the content on the site to keep these people coming back. As a whole, these plugins allow sites that don’t have high page ranks or paid advertising to attract some of the visitors they need to become successful.

I have had a good look around your site and you have some great information on here, as both our sites are diet/health sites if you are interested in a link exchange let me know.

Darren