Shiny Frog's Delibar app, for iPhones running iOS 4 and higher, combines the social and antisocial bookmarking features of Delicious and Pinboard. Save, manage, and share web pages stored in the cloud, and integrate with services like Mobilizer and Instapaper.
The Delibar app has the ability to sync across multiple computers and accounts and has a bookmarklet that can be used with Safari. It's currently available in the App Store for $2. [Delibar via Macworld]