hello :-)
Many tahnks for your projects.
General conclusion from my marketing consultants:
the name of web service suggest someting crazy, so good ideas with changed z in the name(just little bit crazy), but not good is a biting - neagtive emotions(i bit, because, Im angry;-)
crazy eyes could be interprete like someitng to hide...;-)
Logoype should be a happy people like a sign, they are closed themself and they happy of deal
Two peopole suggest collective deal and hands up like jump show happy, cool , clearance from good deal
few other colour bag in hand suggest many type of shopping
This my last advice for projects...
Thank you
Kamil