One important feature is missing in browser plug-in - when saving web-pages and selecting a folder to save them into: I have so many folders it takes me forever to find them!!! Simple ctrl+f (aka search) for folders as there is for tags - would help a lot! I realize powers of these programs are in creating tags and linking things together, but I read so many diverse categories that I can't get by without structures!
Also it is painful that you can't switch tab, or close it when you are waiting for web-page to save! It could auto-close after it is saved e.g. People with a lot of notes saying it takes long time to create new snippets of saved web-pages!