Discuss the PPC industry and strategies on a more generic level then AdWords or Yahoo Search Marketing.
Affiliate marketing is heavily driven by the SEM industry. Discuss strategies for finding niches, rankings well and positive ROIs.
There are many contextual advertising programs outside of AdSense and YPN. Discuss the others here, or general discussion on contextual ads in this forum.
Local search is hot these days, with the release of Google Maps, Yahoo! Maps and their local engines - SuperPages and Yellow Pages online is huge.
Pricegrabber.com, Shopping.com, BizRate.com, DealTime.com, Froogle.com and so on. Discuss shopping search tactics here.
Tracking, Conversions, Paid Inclusion and or anything that doesn't fit in the other SEM forums.