Here is a great resource from Marketing Sherpa with many great tips and tricks for online marketing and advertising:
Marketers from 110 organizations contributed test results and lessons-learned stories for our fifth annual Wisdom Report, including: BMW, Motorola, GMAC and Savvy Tot:
* Email campaign segmentation tests and results
* Blogging, podcasting and mobile marketing tips
* Search marketing tactics and offline advertising
* Web site design and social networking done right
Plus, B-to-B marketing campaign lessons and getting around office politics.