about you suggestion: I believe this reduction could be apply only on new members, this could be fair what do you think?

NO! absolutly not fair imo and we will leave it so like it is now. All cloakers/members are same for us.

good job design team 

requests signed: how many posa requests you have signed a posa transaction for
requests completed: how many posa requests you have cloaked successfully


I think that here described well,what is not clear?

http://cloakcoin.com/downloads/posa3wp.pdf

requests accepted: how many posa sends you have offered to be a cloaker for
requests refused: how many posa sends you have refused to cloak (due to bad data from sender etc)
requests signed: how many posa requests you have signed a posa transaction for
requests expired: how many posa requests you offered to help cloak but were not needed for
requests completed: how many posa requests you have cloaked successfully
fees received: amount of fees earned (in this session) from posa cloaking

about your stats:

you've agreed to cloak posa sends but sender used other cloakers as there were many willing to help cloak....

we are changing it so that sender sends a message to cloaker to say if cloaker is needed or not after they accept