Great idea, slow execution

Hi,
The idea is fantastic.
However it did not work at all on my site. I am using an external cron to call WP-CRON and even though it wp-cron was called every 5 minutes, everything was crazy slow. After half a day this had only checked 19 plugins and still no result.
I had to manually add the cron call for anything to happen.

Needs a bit more work: keep it up!