I don't think you can, and being friends on here doesn't really mean anything anyway. Just shows you when they're online, so if someone were to friend me on here without my knowing I wouldn't really care one way or another.
"Hey, you're really cool so I added you as a friend, can you please add me as a friend back? Let me know. Message me on here or shoot me a text at 518-332-8497"
copy paste this into google to see everytime someone quoted one of your posts. hit ctrl + F and type in your username then hit enter until you find the post quoting yours.
"quoting username" site:newschoolers.com
it cycles through your username in the orange box at the top left, friends list if you have yourself as a friend, online list then anything else on the page. the threads don't appear in chronilogical order in google but you can go into advanced search and choose past month, past week etc. "