manda,
Go to Security & Privacy --> General tab --> Uncheck the box that allows others to view your offline / online status on the web. This is the most important one.
Also, for added spam elimination, go to the Ignore tab, check "Do not accept multi-recipient messages from" and select under the pull-down menu "users not on my contact list." And, for added spam elimination, check "Do not accept WWPager Messages"--that is, assuming none of your actual friend send WWPager messages. If you do all three, I can guarantee you'll never get that ICQ spam again, as I haven't gotten any since.
However, even with authorize on, there are ways around that, as 1) you can send direct messages to whomever you want, even without being added to the contact list, and 2) the most popular ad-removal crack on ICQ also includes a crack around authorizing. My suggestion to you, then, would be to add the purpetrator to your ignore list if they continually harrass you, and only this can happen if someone is purposely trying to get to you specifically.
Melon
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"He had lived through an age when men and women with energy and ruthlessness but without much ability or persistence excelled. And even though most of them had gone under, their ignorance had confused Roy, making him wonder whether the things he had striven to learn, and thought of as 'culture,' were irrelevant. Everything was supposed to be the same: commercials, Beethoven's late quartets, pop records, shopfronts, Freud, multi-coloured hair. Greatness, comparison, value, depth: gone, gone, gone. Anything could give some pleasure; he saw that. But not everything provided the sustenance of a deeper understanding." - Hanif Kureishi, Love in a Blue Time
[This message has been edited by melon (edited 10-27-2001).]