Have just seen this as they say that the phone was linked to the hotmail and gmail ?
Windows Live Messenger: Windows Live Messenger is subject to a fair use allowance of 10,000 instant messages per month. If your usage exceeds this amount then we reserve the right to charge you for the excessive element of your usage at the daily rate for mobile internet access outlined for your tariff in our Tariff Table. Use is within the UK and is for your personal, non-commercial use only. It is for use when accessed via the applicable Windows Live Messenger application on your handset only. If you access Windows Live Messenger via the mobile internet then you will be charged the daily rate for mobile internet access for your tariff and will be subject to our fair use policy for mobile internet access. Roaming rates apply if accessing service from abroad: refer to our Tariff Table. There is no limit on the number of instant messages that you can receive.
Please correct me if wrong ? link here ( our fair use policy )
http://www.virginmobile.com/vm/gener...r.sm068#terms9