You can encourage your "lost Followers"
to come back
by suggesting that they sign up with a Google/Profile Account.
It is the Followers without a Google Account who were removed from your Followers List.
You can also add a "Gadget" to your side bar which lets your readers "Follow by Email".
The gadget will say "subscribe to blog here".
Below is an excellent post on how to proceed, step by step.
So, please don't be discouraged.
Those readers, who would still like to follow you, have several options.
The more we talk about it the more our deleted Followers will be aware that they have lost a valuable friend.
Have a great Sunday, dear Blogging Friends,