Just like the service Halff created, the man himself seems like a brilliant guy who you know has great ideas but communicates them poorly enough that it frustrates people pretty quickly. The value proposition is unclear, the site architecture is frustrating – right now it’s a service for standards true believers. This author uses it personally, though almost every time I do I grumble and ask if whether I should go back to using Delicious.
A good reminder that building a cool product is only half the battle. The UI, layout, and clarity of the site and marketing are at least equally important.