Here's 2 articles from Mashable.com which can help in you online strategy

1. 6 Online Tools for Expanding Your Video Strategy
2. Top 20 Sites to Improve Your Twitter Experience

Advertisers should really start utilizing web videos as a strategy whether just placing their commercials on the web or actually creating materials for the web. Nestle has actually started doing this by implementing youtube campaigns. You don't need to pay to place on the web and videos are a really good selling tool. One of the most successful online video campaign was implemented by 'Will it blend?'. Internet was the only medium they utilized and they generated a huge amount of sales from this campaign.

Utilizing Twitter is still a little tricky for me. Since it easy to set-up and link to Facebook it usually a standard when implementing a social networking campaign. The real hard part is actually using your Twitter as a marketing tool to push sales. It's not that easy to build a following on Twitter - this is why that article above would be a good resource.