The most powerful marketing tool for a job seeker is…

… when all the personal branding channels are combined.

In no particular order:
1. Social networks presence – descriptive public profile combined with the active participation in discussions.
2. Personal Blog
3. Presence on the Corporate Blog
4. Any online publication (indexed by Google)

The real power of all your online presence is in the ability to connect all those channels together. Ad your friends and co workers in social networks, drive them to your blog for more status updates, get them subscribed to your RSS feeds and twitter. From your RSS and tweets send them back to your questions and discussion on your blog and social networks, and increase the readership in every jump from one media to another.

Personal branding practice as above replaces the necessity to look for a job on jobs sites. The recruiters will ‘know about you’ already anyway. Just blog daily, and publish one article or a question in the social network of your choice (relevance to your target industry).