Eh, not going too crazy about the idea Tom.
People already make it clear who their friends are. You'll see people who have lists dedicated to their best chums from Newgrounds. Anyone they don't like is banned. You have a good idea who is friends with who based on the quality of the comment, and the quantity of those comments.
If it's going to be anything like Bebo, then you'll need approval on the Friends List before you can do ANYTHING on that userpage. What if I want to make new friends? For all I know, this Friends List system means that people who I know from the BBS, who want to engage a decent conversation can't do shit.
The advantage is:
+ Spammers and trolls can't leave comments on my page.
Disadvantage:
- People that I have become acquainted with can't leave comments either.
And having to add friends and then trying to tell them to add me is a chore I could do without.
Now, let's assume that it's just the addition of the friends list, and nothing else. People can leave comments freely.
I could bet my life that it's going to lead to more spam, with comments from nobodies and strangers saying "hi add me pls" for attention.
Top artists like JohnnyUtah, Stamper, etc. will face the worst of it, as they have numerous fans who all want to be best buds with their favourite flash author. And will they be accepted? Of course not. More spam ensues:
"WHY WON'T YOU ADD ME JOHNNY"
I can do without it, and I'm pretty sure that artists (not necessarily JohnnyUtah) could do without it too.
Now, there's always the chance that you'll go on regardless, and I'm prepared to accept that, where others won't. But please, reassure us that this isn't going to be a cock up. Tell us how it's going to make Newgrounds better.