Here pal look When you comment on a post close the destiny app. Re open it go to your character profile screen (main one that pops up when you open the app) press the button that has the 3 ••• symbols then click "activities" and boom you can see every post you've liked and commented on. It's surprising after almost 3 years NOBODY knows this. You don't need bumps for later you don't even need to comment YOU NEVER DID I know right I'm a -blam!-ing god you're welcome.