Hi, thanks for your response.
To answer your questions:
1. I'm not informed as to the scope of SABnzbd, so I can't comment on whether this feature would fall out of scope or not.
2. It helps to download things because you might become aware of something you'd like to download but can't locate an nzb for at the time you become aware of it. By making a note of the data you want and perhaps how you became aware of it, you have an easy way of being reminded to check again, next time you're looking for nzbs
3. I tend to use them as follows:
Say I read a post somewhere about something I want to download, lets say it's a demo for a new game. I go to an index site like nzbmatrix and search for an nzb for the demo but I can't find one. I'll make a note of the name of the 'release' and where I saw it. Next time I'm looking for nzb's I'll check my notes and search again for any that I couldn't find previously in case they have been posted in the mean time. When I find the nzb, or give up trying, I'll delete the item from the notes.
It could also be a place to record anything else pertinent to stuff being downloaded using sabnzbd. e.g. "album for grandma"...
I've found the feature in Alt.Binz to be useful but given that I've needed rdp access to administer it anyway, I might as well have just used notepad or something. Now that I can administer my client from anywhere using just a browser, it'd be great to have this feature built into the app.
I hope this helps you understand the reasons I posted the request.