Using del.icio.us as a marketing channel
I’ve just spotted Adobe as a “user” on del.icio.us. It’s interesting to see that organisations like this are using del.icio.us as an online marketing channel to increase brand awareness, page rank and general online visibility.
I’m sure we’ll see many other organisations doing the same thing in the near future as people turn to bookmarking sites like del.icio.us as their first port of call for search - where “page rank” is effectively determined by the users themselves and you can be guaranteed better results. I can even see a niche emerging for optimisation services for these sites, just like SEO became a niche industry around Google page ranks.
For more on this topic, see this entry on Web Strategist, where my ramblings above are even listed as an additional resource (thanks Jeremiah)!