You will not like my comments because they are negative.
Cloudmark is a community voting scheme. Users vote by submitting
examples once they receive the spam. Notice I say that they RECEIVE the
spam to then report it (to vote it as spam). That means you have boobs
voting on e-mails that do not qualify as spam but merely as unwanted
e-mails. It also means those who poll their e-mails regularly and at
short intervals WILL see the spam because there has not been enough
voting on that message yet.
If you are the first few hundred or couple thousand to receive the spam,
it will not be in their database. The first victims still see the spam.
The first victims report the spam to save the hash code for it in the
server database. Then later potential victims get the advantage of
using that voting to not see that same spam (except those users still do
see the spam when checking the spam folder for false positives). I
rarely got new spam that had sufficient voting so that it marked as spam
for me. Instead I'd see the new spam (not yet flagged as such), vote on
it, and someone else did not have to see the spam. I got to work for
free to help someone else not see the spam and Cloudmark got the credit.
You need to connect to their database to check the hash code for a
reported spam to compare against the hash for your new e-mails. That
means problems with offline spam checking. You have to do the spam
check right after your e-mail session with the server but BEFORE you
disconnect from the Internet.
filtering to generate no false positives (good e-mails flagged as spam)
and few negatives (spam that did not get flagged as spam). Otherwise,
there is no point in using such a system. Why? Because you still have
to go monitor the spam folder looking for false positives. Having to
review the spam that you receive negates the purpose of filtering it
out. If you are reviewing the spam, you are seeing the spam, so you
wasted time to segregate it. Maybe you do not care about losing a few
good e-mails that were wrongly flagged as spam. That is not a tolerable
By the way, Cloudmark started as SpamNet. That started out as free for
personal use. What they did was use volunteers to test their setup,
load test it, and build their database to flesh out their entire system.
Then when it was deemed ready for commercial use, they yanked it away
from their volunteers. It was no longer free. They did not offer a
discount to their volunteers that had helped them test and modify their
system. They just ripped it away and told current users how much it
would cost if they wanted to continue using it. Since it already had
the deficiencies noted above, I was not going to waste my time with it.
Note the topic of this newsgroup. It discusses Windows XP, not spam
itself or spam-related programs. For anti-spam discussions, go post in
those newsgroups, like alt.spam. "Advertising", as you stated, is
spamming, especially since your post is off-topic to this newsgroup.