writes "Wal-Mart has announced that it will sell a post-paid wireless service powered by T-Mobile, which will be targeted at families. Users who sign up for Wal-Mart Family Mobile service will not have to sign a contract. The first line will cost $45 per month, and each additional line will cost $25 per month. Each line will have unlimited talk and text, so overage charges will not be an issue. For data access, each phone will come pre-loaded with a 100MB card known as a WebPak, which is shared among all lines on an account. Data does not expire, and refill cards can be purchased in Wal-Mart stores or online. The WebPak can also be used to make international calls at 5 cents per minute to any landline number in about a dozen countries."