I have a question that I can't find answered in the readme. I have read the whole readme...

I've installed the snapshot mod running as cron after having a site hacked and starting fresh with Zen 1.5

I notice that there are continual additions to the BMZCache folder.

Are the images for IH4 created on demand by users browsing the site?

If so, is there anyway to force the script to run and create all the images at once so that the snapshot of the website files will remain unchanged?

What does the clear cache in the admin tools actually do?

Should I exclude BMZcache from the snapshot tool? I'm reluctant to do this because I've heard hackers can disguise a file as an image. I certainly don't want to be hacked again and am now taking security as seriously as possibly.