I think it'll be interesting to keep an eye on the European Football Statistics website this season. If you look at the figures so far at:
2006/2007 Season
You'll see that after 6 games our attendance as improved by 4.3%. I'm not 100% sure if this is compared to the first 6 games of last season, or the the entire 05/06 season. Of course we've had a couple of "big" teams at Ewood, so the figures may be up because of the United etc game. We'll have to see what the percentage is at the close of the season.
Newcastle, Man City, Boro, Bolton and Wigan all all down on last season, whilst (predictably) the newly promoted teams, Arsenal and United have grown.
PS we haven't had one 3pm saturday kick off have we at Ewood this season, have we? I sure this doesn't help.