2 ms·Not an online service, but PowerMarks was doing this over a decade ago. Defunct, now: RIP.by pasbesoin 14y agoNot an online service, but PowerMarks was doing this over a decade ago. Defunct, now: RIP.benwerd 14y agoWorth saying that Evernote does this too, if you want it to.platz 14y agoPinboard does if you also have bookmark archiving turned on.