Aside from hiring Three Billy Goats Gruff, dKos community members felt that the best way to deal with trolls is as follows:
The greatest number of the 40 respondents, comprising 42% of those who responded, believe that the way to deal with trolls is to make the comments of any given troll viewable only to that troll.
The second greatest number, 11%, believe that individual, user-controlled "troll-lists", which would block the messages of whatever users each individual felt to be a troll, would be best.
A good percentage (20%) believe that simply living with the presence of trolls is the best way to go.
Only 2% believe that banning trolls outright is the best way.
The rest (7%) believe that there's another, preferable way to handle trolls.
So, there you have it.