Oh, thanks for the tip. Did not know that there are so many sites available for that.
i do not want to register the account for any scam activities. i just do not want to share my private mobile phone number.
well, here
http://hs3x.com/or just google the keyword , receive free sms x
x is the country and you can find some nice sites that offer this service
but many people use same number over and over, and your code is (sms)
is publicly available , many novice carders/blackhats use this as well
so be carefull, if you had to your account any good data.