let people log in with Twitter and Facebook, to make StackExchange reputations easily exportable to other platforms. StackOverflow should change absolutely nothing about their login process. It is perfect. I anonymously answered one question, and all of a sudden I have a profile. No confirmation e-mail, no Facebook or Twitter crap. Just use the site and bam! you're registered. It remembers me every time I come back a…
So it is in your best interest to "solidify" your membership if you care about your account.