These suggestions are provided to help you make your postings more effective, and keep the sat. You are strongly encouraged to follow them. Although there is a broad spectrum of opinions, most people hate inappropriate or repeated advertisements even more than they hate junk mail and junk fax. Ignore this reality at your peril. If you do, you'll probably find your emailbox littered with irate hate-mail, and a substantial number of people boycotting your company or product.
Most major cities have their own news hierarchy for similar purposes.
The sat.general and sat.forsale groups seem particularly prone to this sort of abuse. Many people don't like this. Similarly, rather then posting to lots of regional newsgroups for Texas cities, post to a statewide tx. Do NOT cross-post it to lots of regional groups. It would be more descriptive, but it'd take longer to type.