I use my personal blog to record my food, and I use a calendar at my office to track exercise. (I actually have a detailed exercise plan on the blog, and if I meet my goal, I place an X over the date on my calendar. It's great for motivation to look up and see Holy crap, I've done so well this month! Look at all those Xs!)

I'm definitely old school (paper and pen), lol. I used to keep a food journal but now what I eat is pretty much ingrained in my brain. I do however, keep a workout journal so I can chart my progress. I look over it periodically to see where I can make changes, improvements or if I just need a little motivation.

I created a diary in Word, back when I first started this plan 2 1/2 years ago, and aside from the occasional lapse I write in it every day. Each entry has a header where I write in current weight, day's food and calories, exercise, chores, and so on.

I used to keep a more dedicated food summary in another file, but it got to be too much effort.

I use an Excel spreadsheet. I have one tab that lists all kinds of food that I eat, separated by "Protein" "Vegetables" "Fruits" "Dairy" etc, and I have another tab that is my "Food Diary," so all I need to do is copy and past my nutrition facts into my food diary (I list what I ate, the serving size, calories, fat, carbs, and protein. I have a separate tab keeping track of my exercises and weight/bmi. At first it can be tedious to get all my nutrition facts entered into the spreadsheet, but since I'm a routine sort of girl, I don't have to add anything new very often. If you (or anyone) would like, I would not mind sending you the spreadsheet with all the nutrition facts in it! Just let me know

I use MFP on my phone. I tried pen and paper the last time I tried logging and I couldn't even stick with it for a week. I've been using online sites (calorie count at first until they changed their mobile site and now mfp) for three months and I can count on one hand the number of times I've skipped a day. I wish I actually had the internet or a smartphone but this is working for me so far. Also I can do it in front of other people and they just think I'm texting someone.

I use fatsecret.com to track all my calories. I don't track exercise currently though. I keep my food well under my BMR, and all activity (whether exercise or just regular activities) are just "bonus" for me.

Pen & paper.

I do have a myfitnesspal that I consult for calorie counts from time to time, but to me, nothing beats the convenience of pen & paper. Never breaks and I can carry it anywhere.

I do everything through mynetdiary.com. I can use it online, on my phone or my ipad. I can see everything I eat for the day, for the meal, for the week. I can add fitness, etc. I love it because I always have my phone with me so I never 'forget' to add something. I realized just today that I probably will do this for life because it really is eye opening to see how fast calories can add up if you indulge a little here and there.

I like seeing different reports from the same data. I definitely prefer my own (not online site) nutritional software. Mine has a journal that I write in everyday and copy to my blog. I can print a daily report that has all my foods, numbers and the journal. Since I am on the computer way too much, it is easier than writing on paper and always hunting for my "book". Plus, I don't have to do any math, lol.