Assegnate 4 su 5 stelle

This is a great add-on, having very good and simple ui. But I am missing few thing here,
1. Signature: I have enabled signature, but with this addon signature is not inserting when I am composing mail. Please add support to signature that will help a lots.
2. I have enabled send in background. But with this add-on this is also not working. Please have some look in this issue.
3. Also when I am clicking any email link, the old editor is opening instead the new one.
I understand this is only experimental release and it has to go a lot way to be finalized. And I hope this thing will be there int the final release.
I am using ubuntu 11.04 with thunderbird 5.0 and version of add-on is 0.2.
Once again thanks a lot to author.
A.Paul