I haven't been able to recharge my Wind SIM with mondowind so I went looking for another online top-up provider. I found Ricaricati.com. It is a bit cumbersome for non-italian speakers but for those who recharge on a frequent basis it may be a better deal as they offer a 15% bonus (as long as you pay a EUR15 activation fee).

The site is ricaricati.com. If you decide to try them up my referal code is 6MCFR.

vs

I discovered that Wind have again extended the life of the offer - it can now be applied for until 31 December, and usable until 31 January

Unfortunately that's not sure! In some parts of their internet sites they extended it, on some other pages not... On the main page they wrote both the new and old expiration date! :blink:
I really hope they are going to extend it, but by now nothing is sure...