in reply to Re: Re: State-of-the-art in Harvester Blocking
in thread State-of-the-art in Harvester Blocking

One possibility would be to check for the presence of a cookie on the user's computer. If we don't find it, they get a message...

Would that actually prevent anything? First of all you "punish" people who disable cookies in their browser (and I know quite a lot of people who do). Secondly, I don't know much about these harvester software packages, but even a simple Perl bot could use HTTP::Cookies so I assume these programs can too :(

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Re: Re: State-of-the-art in Harvester Blocking
by perrin (Chancellor) on Nov 23, 2003 at 22:02 UTC
    It will work against most harvesters, since if they accept the cookie you will be able to track how many downloads they get for the day and limit them. In general, commercial programs for this are only sophisticated enough to use cookies, not sophisticated enough to rotate between dozens of sessions in order to prevent being limited.
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