I received a Twitter DM from one of the accounts that was a victim of Twitter phishing this weekend.
Hey! I just got a FREE iphone from this website.. here
The culprit is a follower known to me, and not a random spam follower this time. Looks like some other people are experiencing the same thing, according results found in Twitscoop:
Just received a DM from an actual follower. helloiphones.com So not clicking th@, & delete! My 1st phish. Watch out 4 it Twitteropolis.
An InformationWeek Article mentions that some hacked accounts were compromised by someone who hacked some Twitter support tools.