I use one as I use multiple browsers, on multiple computers, at multiple locations, with varying permissions. The social discovery is quite neat in some of them as well.
But yeah pay for one... you'd have to have a special need to pay for one. For reference the one I have been using and enjoy is Kippt (https://kippt.com)
HOWEVER their latest update has broken login on Safari if someone from kippt reads this please please fix it so I can use it on my ipad :)
Possibly an unpopular opinion, but I agree. Google has had their bookmarks service since 2005, and I don't even use that. Standard import/ export and attach the file is all I've ever needed.
Perhaps there is a use case outside mine? I also don't give an iota of a shit about socially sharing my bookmarks.
Cross-platform access is the killer feature for me (with Pinboard). I frequently need to access my bookmarks on systems that aren't my own, so these sorts of services are quite handy.
I agree with you. URL is just one kind of the things we need to quickly store. We also need short notes, pictures, blobs, sounds.. and for that, we need something like Evernote. Having an app just for URLs seems crazy to me. Just MOO.
But yeah pay for one... you'd have to have a special need to pay for one. For reference the one I have been using and enjoy is Kippt (https://kippt.com)
HOWEVER their latest update has broken login on Safari if someone from kippt reads this please please fix it so I can use it on my ipad :)