Some information that may help in future endeavors (skip to the last paragraph if you just want the answer to your question):
A query string is part of a URL that can be consumed by a web application (such as ATS). A query string typically begins with a question mark and its
individual criteria are separated by ampersands. It takes a format similar to this: "?key1=x&key2=y&key3=z," where the word that precedes the
equals sign is a key and whatever follows the equals sign is a value. Query strings help web developers pass information that exists on one page to
another page that needs that information.
Now, with that in mind, do note that how a web application responds to a query string may differ from what you expect due to a number of reasons.
Chief among them is how the web developers decided to consume any given query string.
In your case, you can probably just chain several negate commands together to achieve your goal. In other words:
www.abovetopsecret.com/forum/today.php?negate=25&negate=121 should cut out the religion and swine flu forums, provided that the ATS web application
has been programmed to respond to multiple negate commands and not just the first one that it encounters. I tested this briefly and it appeared to
work fine for me.
-FT.

