My blog is under comments spam attack

Recently I noticed, that leaving my blog comments open without my authorization is not so good idea. I want it to have open to anyone to comments, but it seems that my blog has been posted on some list how to build up PR on Google. Stupid comments not connected with post topic and links to bizarre homepages and blogs.

Therefore I am forced to turn direct commenting off. Unfortunately that will means I will have to authorize every meaningful comment and that those comments won't be available immediately. I am sorry for this inconvenience, but I have to remain this blog's integrity.