How to ruin your blog?

I keep trying new software, mostly freeware. More often than not, these freewares help me in some manner - either improve my productivity, or provide hours of timepass. But every now and then it comes and bites me in my ass! Desperate to get tabbed browsing on an IE platform, I installed Maxthon. Then I went ahead and installed a blogging plugin into Maxthon. Then needless to say, I used it only to screw up the formatting on my blog. I am super pissed about this now.