Don't support Usenet spam LinuxCAD.
Usenet spam is dangerous. Usenet is not controlled by any person/s or company; it is a community that decides on and abides by rules of appropriate behaviour ( Netiquette ) in order to maintain the health of the community. If some people blatantly disregard the agreed-to laws, anarchy ensues. Advertising is frowned upon in Usenet (see the Usenet Advertising How-To). If the sanctions against advertising stopped being enforced, advertising would flood the newsgroups and they would become unusable.
Due to the low cost of advertising on Usenet, anybody can do it. Most ISPs have strict Acceptable Use Policies (AUP) for their users which prohibit spamming. ISPs who enforce their AUPs terminate the accounts of any users engaging in spamming (IF they receive complaints). Unfortunately SoftwareForge's current ISP is not willing to enforce their AUP.
There is also a large group of Usenet administrators (they control their own personal News servers) which run Cancel bots (see the CancelMoose) which identify and issue cancel messages for some spam. Some of SoftwareForge's Usenet posts have been cancelled causing them to modify their posting methods to avoid the cancel-bots.