A lot of things do happen at Facebook regarding growth and partnerships. According to the following articles about 10000 websites do integrate with the social network daily to increase their presence. In the reach of online games now more people are playing on Facebook than on the most popular gaming consoles together.
These statements have been done at the PayPal Developer Conference, where PayPal itself announced a new micropayment system, an online payment system enabling to economically transfer tiny amounts of money like it happens to buy virtual goods. Last but not least PayPal and Facebook have announced a cooperation.