Thought I'd dabble with the Social Networking skill and doing the Major Master LTW.
First and foremost, the Social Networking skill without cheating takes quite a while to level to 10. I mainly had my sim stand there and stream videos over and over again which lasts about thirty sim minutes to two sim hours. You get access to the relationship transmogrifier app at level 7 and are limited to friend, acquaintance, and disliked. Leveling up the skill gets you access to more options and of course, more skins for your phone. As for blogging, spamming blogs gets you a negative moodlet for over-blogging and causes your actual blog entries to be... well, bad to say the least. Followers do not enjoy a blogger who posts 4+ blogs a day (and really, neither would you) but depending on the situation like making a new friend, leveling a skill, getting married, and depending on the theme of your blog, you can get access to a "gotta blog about it" command which is pretty much a guaranteed 50+ followers. Since getting your blog up to 4 stars takes weeks if you do it casually, the blog selling challenge could end up being very difficult if you want to supermax it with aging on.
As for the Major Master, a LTW where you must get 3 degrees, I was a little shocked that a sim with ambitious only gets 40k LTHP for completing this. However, the funny thing about this LTW is that each time you go back, you get a wish to get another degree. On my sim's second major, the wish earned him... I want to say 21k-ish but I'm going by memory here. When you go back for your third major, the wish for three degrees will be worth 51,500 with ambitious. Yes, the actual wish for getting your third degree awards more happiness points than completing the actual lifetime wish. Throw in a happiness serum, you're looking at about 180,000 LTHP for completing this LTW with an ambitious sim. Sweet!
I should also bring up that when my Major Master sim came home from university, he had a bunch of bills in his inventory that he could not get rid of. No Bills Ever does not prevent this from happening. What I think causes this is if you choose to rent your own place instead of staying at a dormitory or sorority/fraternity home because my initial Perfect Student sim stayed at a dorm and did not get the bills. Renting your own place costs money, staying at a dorm, sorority, or fraternity home doesn't.
Just for fun, if you rant about death, there's a chance your sim will just suddenly collapse and die. Grim Reaper does not like being insulted. He resurrected my sim first and let her off with a warning. She got a 12 hour negative moodlet and a verbal lashing from Grim Reaper, who then proceeded to broadcast his own campus radio show with someone else's radio station. Naturally I had to press my luck since "death by ranting" seemed hilarious in my mind so I had her rant again. Let's just say the Grim Reaper's last words to the sim were "I warned you."