Here's some math -
1750+1000+500+1500+1200 = 5950: what anyone who owns all the games or takes all the quizzes can get
35 challenges * 500 points = 17500 points if someone won all the challenges. They are randomized, with 100 winning based on creativity as well (I'm not sure how it's chosen overall) - I've not heard of anyone winning more than 10, so let's go with 10 as the max wins: 5000 points from that.
50 clicks per day * 10 tokens = 500 per day, 5 days of auction = 2500 points just during the auction run alone. Not counting days before the auctions started, not counting clicks over 50 (and anyone on the forums can get 50 clicks a day, honestly, though I didn't try outside of the link-sharing until today)
5950 + 5000 + 2500 = 13450.
And if you were getting referrals before the auctions started, or more than 50 clicks per day, or won more than 10 contests, you could have much more.