I'm creating an email list managed by my CMS. I'm wondering if people
had any thoughts about securing it?
I'm just concerned that my application server might be overwhelmed by
requests to add to the list by a spider, etc.
Am I being overly concerned or is that a real possibility? I was
thinking of adding an image with a random sequence of numbers or
letters that people needed to type in a box to prevent this. Does
anyone have any experience with those sorts of things?