This could be done with rules and rules would be a killer feature.

Yeah, autotagging would be really cool. I would be happy to have rules like "If Subject Consists 'Write' Add Tag 'To Write' "

Agreed! Rules/filters/whatever_you_call_them would be great!

Isn't this conceptually the same thing as a smartlist?

I guess I am a bit different in that I have all tasks in a single list and use smartlists to "autotag" them. This lets me slice and dice my lists in any way that I can see fit (and the search syntax supports!).

I'm with erik - I i don't see what auto-tagging would do that is different from the current smartlist arrangement.

[I also have everything in one list that is parsed by many smartlists.]

Auto-tagging I see pretty beneficial for possibly implementing GTD with a next-action tag automatically applied when the one previous is completed. Of course this doesn't apply yet because we have no custom sorting for "projects"... =)

Rules or filters could be quite cool however. Great idea for flexibility sake!

Hmmm, I did a little searching before posting. I don't see anyone else bringing up this function:

When I enter a new task from a smart list it auto tags/auto-populates all of the tags for that search string.

So, for my @calls smart list (tagged with @calls & na), if I enter a new call from that smart list, it adds the two tags, "@calls" & "na".

I thought this was very helpful to me and was surprised I hadn't seen it mentioned. Although, I am stil a newbie, so maybe it's been mentioned and I haven't yet seen it.