BotBlock with Invisible CAPTCHA
It looks like LinkSleeve has been failing me lately. The past week I've been inundated with comment spam. So, to fix that problem, I updated the BotBlock plugin. You can download version 0.2.0 here. Just unzip and drop it in your LnBlog/plugins directory, overwriting the old version.
For the new version, I basically rewrote the plugin. The old version did nothing but force bots to download the comment form before submitting, which was fairly useless.
As a fall-back measure, I also included an option (on by default) for some simple content filtering - that is, comments with HTML links in them get blocked. The idea is that most of the comment spam I get includes plain text, HTML, and BBCode links, but LnBlog only allows plain text in comments. Therefore, anyone who posts a comment with an HTML link is either a spammer or too stupid to read the instructions. Either way, we probably don't care what they have to say.
So there it is. I haven't had any comment spam since installing the new version on my site. Of course, I'm still having problems with TrackBack spam for some reason. Apparently the LinkSleeve and TrackbackValidator plugins aren't working for this particular wave, though I don't know why. I'll have to work on that.
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