Well... look at the bit of detailed loveliness I just got to my inbox about one of my latest followers:

Just enough to help make a quick decision and certainly better than the previous mystery package which was the old way of notifying you. The added "You may also block [whatever their name is] if you don't want them following you" is another nice touch and gives back a little of the balance which was lacking. Maybe the realisation that part of what makes Twitter work (or doesn't work) for individuals is having a network and being part of that network. Without a bit of participation, a fair number of people have been using the service long enough that they just can't afford the time to reciprocate the Twitter follow.
On my 'stuff I like' (but realise I am nerdy for liking!) list. :o)