I don't use Spark, never have. I follow a low carb/paleo plan and they do not exactly believe in either.
I keep only "acceptable" foods in the house....except for a few items for my son. I just eat whatever I want that's in the house. I almost never plan. I have a large freezer and it's not unusual to see me defrosting something an hour before I cook it!
I would love to find a place where I could put in my likes and dislikes and get something generated for me....but so far I've not found one that's worth it!
Low Carb and Paleo advocate
Palindromic Rheumatoid Arthritis diagnosed September 2007
Raleigh Low Carb Examiner