Free $25 Uber Credit (For Existing Users Too)
Update: Unfortunately this offer is no longer available — if you enter the code now, you'll likely see the following message (although it's still worth a shot): "Promotion has a redemption limit and too many users have entered the code."
You're going to want to act fast on this one. Uber appears to be targeting Rogers Mobile customers with a $25-off coupon, but you should be able to take advantage even if you aren't a Rogers subscriber. According to the Rogers website, you'll get $25 off a ride in Canada or the US, and current users are eligible as well. Simply click the Promotions tab in your app and enter "roamwithuber." Once activated, the promotional credit is valid through the end of the year.
You can even stack the $25 credit with a referral bonus — new users can earn an extra $20 in credit by signing up here. Or you might be able to get $30 in additional credit ($55 total) by using "RIDIN30" when you sign up through the app.