Among the search parameters available, include IP address, social media profiles, and phone numbers, so it is definitely possible to unmask someone online, but their bread and butter is credit information which now a days includes everything about you (ever wonder how they make security questions to verify you off “public records”?)
Psyllium husk, like in Metamucil and fiber capsules, usually clocks in about 5 calories per gram of fiber. For 35g thats about 175 Calories. You can usually get it loose so you can mix into food but blending 35 grams over the course of the day, you may be better just taking a bunch of capsule throughout the day with alot of water.