Xmarks.com sounds closest to what you're describing. There were rumors of it shutting down last year, but it was acquired by LastPass and seems to be chugging along.
Yet Another Extension for Google Bookmarks Extension lives as an icon on your Chrome browser for one-click saves, and shows bookmarks in a tree view. Google also has a bookmarklet for it if you don't like extensions. Bookmarks are saved to Google, not just Chrome, so you can access them in any browser at google.com/bookmarks. It has one-click sharing to G+ (I know ...), but you can also save to a list and share that anywhere.
Read it Later (readitlaterlist.com), Instapaper.com and Readability.com are marketed for offline reading, but I also use them for saving and sharing bookmarks. They all have apps, bookmarklets and Web interfaces for easy saving and sharing.
I'm still a new user so can only submit 2 hyperlinks. Sorry.