Spiders invade your oldest posts. The older the post, the more spiders you get!
Spiders are showing up at random locations on your web page as your post gets older.
Demo page & Blog: http://www.mendoweb.be/blog/wordpress-plugin-spider-invasion/
Moreover, these spiders are kind of frightened and unadventurous hence they may not show up all the time and if you’re approaching them too close, they will frighten away.
Did you enjoy this plugin? Please take a moment to rate and comment, this will keep me motivated to update this plugin for bugfixes and WordPress upgrades.
It didn’t work for you? You found a bug? Give me a description with some details in the support forum, and I will fix it as soon as I can.