You generally have to go to their sparkpage. You will only see their shared nutrition and fitness trackers button (on the right side, where the add as sparkfriend button is) if they have elected to share it.
Click on the "My Sparkpage" button on my post, and you can see mine for an example.
Writer, mother, wife, and breadwinner. I love to run, but running doesn't love me, so I'm switching to my low-impact bike.
I'm not pregnant, just fat: My blog. fatnotpregnant.blogspot.com/
| current weight: 190.6