I don't want to turn on junk mail controls as my client app handles most junk mail with aplomb (and I'd rather use it than have to occasionally check webmail for improperly marked spam). However occasionally I'll get recurrent spam that the app's filter misses. This is the kind of stuff I'd like to kill with a keyword filter.
The email keyword filter info in the wiki is lacking (or if it's there, I can't find it via the existing links or an intuitive search). Specifically, I'd like to know for certain if I can do wildcards and if so what the wildcard character is. I'd also like to know if I can string together boolean type rules (e.g. "nigeria AND bank NOT refugee*").
I'd also like to suggest that whomever has this knowledge please flesh out the wiki on this topic.