One of my friends at Uni is a member of the mobile phone network Blyk. The great thing about this network is it's free! You get £15 free credit a month to be used on sms, mms, calls and data. The catch is that you get a few adverts a month. These adverts however, are tailored to your tastes and interests and can even include money off coupons!
So, why isn't everyone on this network? Well joining is an invite only process. These invites are notoriously difficult to get hold of. You can get invites by asking someone already on the network to send you one. Sadly my friend is fresh out of invites for this month.
You may be asking, if it's so difficult to get invites why did you even bother blogging about it? Well, I spent some of my summer playing ARGs (Alternate Reality Games) these often require a bit of online detective work in order to solve puzzles. As a result of this I know a few useful google hacks which allow you to get very specific search results.
Blyk partners use special links to allow you to join Blyk without an invite. If you use some clever google hackery you can find this special non-coded join page. So without further ado:
The link you want is the 3rd result down. The URL should read something like http://www.blyk.co.uk/join/(random numbers)
So now you've got no reason to pay for credit ever again!