Speakers can link to presentations from Slideshare to show topics they cover and videos from YouTube to show clips from their latest speaking engagements.
Graphic & web designers can link to Behance to show off their portfolio.
Consultants who help businesses build traffic for websites can link to Quantcast profiles for the sites they have helped.
Entrepreneurs can link to their Kickstarter project to encourage more funding for their ideas.
Podcasters can link to their best podcasts.
Photographers can link to their best portfolio photos on Pinterest.
Authors can link to documents with writing samples.
The list is endless…