I set a throttle policy of maximum 50 requests per ip per second. The idea is to stop harvesters.. not regular users. Hopefully 50 should be a good balance.. if anyone is seeing problems accessing this site, please let me know?. The idea is to limit site usage to harvesters and scripts, not regular users..

mod_throttle has incredibly dense documenation.. had to read it several times to understand what needed to be done.. and I'm not all that slow.

Here's my config:

In the Server configuration section of apache:

<IfModule mod_throttle.c>
   ThrottleClientIP 100
</IfModule>

Which essentially says: Throttle per client IP, keep a history of 100. 100 should be more than enough for my site, since my average requests per hour is 80-90. Too long of a history and it'll be a burden on system resources.

In the virtual host configuration section:

<IfModule mod_throttle.c>
   ThrottlePolicy Request 50 1
</IfModule>

In plain English: limit requests to 50 per IP address per second. I had it initially set to 20 but found that to be too low.. a very busy page (like MT's config panel) wouldn't load completely.. that's bad.

Now since this is my first time configuring mod_throttle and documentation is rather dense and information online very limited I may find out I'm doing something incredibly stupid here.. I guess I'll have to wait and see :)