We are big fans of del.icio.us here at KnowNet, and maintain our own bookmarking pretty avidly (see for instance my linklog). We're also proselytisers for the 'data outside' approach to managing the different aspects of a project's content-management needs, and we've worked hard to train our project colleagues in the use of social bookmarking systems. This inevitably leads to people having multiple del.icio.us accounts that they have an interest in, which can become awkward.

Of course, that's what the del.icio.us API is there for :o) Yesterday we wrote a script (python) which we've started using to copy items with certain tags between mutually trusting accounts. We've run it to create the beginning content for three project accounts so far (pulling this content in from four main accounts in various combinations), and have set up chron jobs to maintain the synching workflow nightly.

The first screenshot shows the simple form used to do a batch copy between accounts (the chron jobs just use the same parameters as arguments in a url). The second screenshot shows a tag cloud displaying tags for a project account which includes many items pulled in using the API script. See EGCRF's del.icio.us bookmarks. We'll be publicising the nookmarks tag clouds for other project sites soon.

Please let us know if you're interested in the script. For historical reasons, it requires Plone and a little product of ours called KNUtilities.