Yeah there has been a lot of changes - Some good and some not so good - I have had a feeling that the whole site is in transition since the summer and I am waiting for it to settle down before giving a full judgement on it.
1) that's strange 2) i've been here almost 3 years. turnover is high. especially when many changes occur. it's normal. i'm always surprised to see users who stuck around as long as i have 3) not necessarily. some come back. some just take a break.