Important note

To avoid comment spam make sure you turn on the "word verification" option.

Go to:

Settings
then
Comments

Towards the bottom of the page there is an option to turn it on. What this does is it makes a person enter a word or series of letters in order to add a comment to your blog. This process helps stop people using automated software to post comments on your blog and gain another link (resource is a much nicer word) pointing towards their site.

Steve