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
VladS
Mobile phones: iPhone 5, Blackberry 9900, Nexus S, Samsung S3322 duos
Mobile data cards: Huawei E587u-5, Huawei E583c, Huawei E160
Postpaid SIMs: CA: Fido, Wind; INTL: Telna
Prepaid SIMs: DE: Fonic, Lidl; AT: yesss!, bob; UK: O2; US: AT&T; RO: Orange, Vodafone; FR: b&you, Lycamobile; NL: Lycamobile; BE: Lycamobile, Jim Mobile; CL: Entel; MX: Telcel; INTL: eKit Blue, eKit Yellow
Dead SIMs: too many to list