An excellent article on del.icio.us and social bookmarking. From a Librarian as well! I take back what I said in an earlier posting on this topic!
Del.icio.us and social bookmarking
Stephen is Director and founder of Collabor8now Ltd, an organization focussed on developing collaborative environments (e.g. Communities of Practice) and the integration of knowledge management tools and processes to support business improvement. He is a certified knowledge manager with the Knowledge Management Institute (KMI) and the author of several published research papers on collaborative behaviours and information technology.
Actually, Social Bookmarking can also be used as a great marketing tool. It allows u to get quality backlink and free web traffic. However, it is important not to submit too often to the same site within the same day. Otherwise, u can get banned by the bookmarking sites as they may think that u are spamming.
OnlyWire dot com and GetBookmark dot com are 2 very handy tool (free of charge). They each allows u to submit to about 15+ bookmarking sites all at one go. But, u must first create your account with each bookmarking site. This can be quite tedious and boring. The other 2 drawbacks are the sites listed are quite limited (some in the list are not even working) and it does not allow u to use keyword phrase as tag.
For those who are seriously looking at tapping the power of web 2.0 social bookmarking sites to generate good traffic and back links, u may want to do as what I have done => invest in software to automate the job. The one I am using right now is pretty neat. It has more sites listed compared to OnlyWire and it can create accounts for u automatically. It also accepts keyword phrase as tag and let u create multiple profiles so that u do not leave too much footprint on the net in case u are accused of spamming. The best part I like about it is that the software gets updated almost every single month to keep in pace with the latest development of some of the bookmarking sites.