Sorry if those question are dummy, but -
1. How do I check for *no* referer field ?
2. Are you sure only 5% of the requests will have no referer field,
considering the number of surfers using firewalls ?
3. Why is it you think checking for no referer field is more expensive,
server side, than th
it. Though the solution is not 100%
watertight, it looks to me like a significant improvement at a low cost.
Thanks, Uri Raz.
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