Which Anti-Spam service you use for Blog?
I have WordPress blog. And for WordPress blog there is anti spam service named Akismet. The service is from the creators of the WordPress. They seem to be good for free account too. Like most of the premium features does not exist on free accounts. But it can take care of the bots and the spam comments. So it is effective for WordPress.
So keeping the WordPress plugins, aside, which anti spam service you use on blog, be it platform like WP or Blogger or Tumblr?
I use Akismet, just like millions of other sites. It's very handy and works very well. My latest blog uses it. I've had the blog for one year and it already stopped ten thousand spam comments from coming through. It's a wonderful plugin and if you have a WordPress blog, I strongly recommend installing it.