I would like to block PicScout Web Robot from accessing my site. I have read that it does not behave like a "good" robot should, so how should I go about doing this?
Please Note: I use a hosted CMS. I do not have access to server side scripts. I do not mind answers that include server side scripts but I am looking specifically for a non-server side way to do this.
PicScout is a copyright verification robot, not a search engine spider. So it's perhaps understandable that they don't behave like "good" robots. They're more like a private security firm than anything else. Also note that there is no requirement on the Internet that they do so: robots.txt is a convention, not a rule.
There are people who've done research on how to stop or slow down PicScout. A simple Google search will go a long way. This is one slightly out-of-date example. However, all of the recommendations are .htaccess configuration tweaks, which it sounds like you might not have access to.