Overall, Braidwood said he is happy with Google's Android operating system. As of Tuesday, SwiftKey was the No. 2 best-selling paid app on Android. One key element to the PayPal approach: It converts the price to whatever local currency the buyer uses. The deal with Google is also huge for PayPal. Eager to get better footing in mobile payments, the placement on Google's Android Market puts PayPal onboard one of the world's fastest growing mobile systems. PayPal has an iPhone app for Apple, but as far as iTunes, PayPal is listed a payment option but it requires a PayPal credit card. "Economics" were said to be one of the trickier negotiation points between Google and PayPal as the talks dragged on, so it will be interesting to see if the Android Market checkout process is as smooth as many observers hoped. --Written by Scott Moritz in New York. >To contact this writer, click here: Scott Moritz, or email: email@example.com. To follow Scott on Twitter, go to http://twitter.com/TheStreet_Tech. >To send a tip, email: firstname.lastname@example.org.