Paypal and Airbnb have combined to offer a $50 discount on stays of at least $200 that are booked by the end of 2015. The coupon code is MEETHALFWAY and you must use your Paypal account to book your rental. Find more information here at the official offer page.
If you were to book an Airbnb stay of $200, you'd be essentially receiving a 25% discount, which is pretty great! Airbnb is often already cheaper than staying in hotels and it can be more fun to stay in neighborhoods as opposed to hotel districts. We used Airbnb three times while in Croatia a couple summers ago and felt it gave us a much more authentic experience, as well as being very reasonably priced.
Airbnb is a popular travel accommodation option by now, but there are still a surprising number of people without accounts. If you are one of those people, you can sign up through my link and earn us both $20 in travel credits! If you stacked that discount with the current Paypal offer, a $200 stay would cost only $130 (40% discount)!
If you don't yet have a Paypal account, it is relatively easy and free to sign up and paying through Paypal for online purchases adds an extra layer of security for your transactions, so I can't really think of a good reason not to take advantage of this opportunity!