I dump many, many bookmarks into Pinboard.in. It's my primary record of everything web related. I've been a big fan of DBD for iPad but, alas, it has ceased receiving updates. But today there is a new app for iPhone that gives me direct access to my Pinboard bookmarks. Pinbook is a $5 app that not only allows me to find old bookmarks but lets me add new bookmarks at any time. The bookmark search is very fast and the built in browser gives me a way to catch up some Pinboard reading. Speed is the key when it comes to a collection of thousands of bookmarks and Pinbook delivers.
Pinbook | iPhone | $5