macosx102
If you're making Web Mobile Apps (based on PhoneGap, or Titanium if you insist), you have to get a Mac for deploying on an  iPhone/iPad.
Some of us not only don't have a Mac in the house, but also don't plan to ever use one for anything other than deploying apps
(or other necessary Mac usage).
If you're one of those people, this service is for you.

Mac in Cloud is a rather simple service that gives you access to a Mac via Remote Desktop (Linux users: works great with Remmina).
After registering for an account, you get the configuration files (for different resolutions and bandwidths), and you're ready to go!
The Mac you get access to is already bundled with lots of programs for developers.

I was surprised to see that even the PhoneGap CLI tool was available, and of course XCode, which made the entire iOS deployment as easy as typing:

1

phonegap build ios

Mac in cloud is also very cheap (50$ a month for the unlimited plan) considering you're getting a pretty solid connection to a Mac without having to buy one.

The pricing system lets you choose between pay-as-you-go & subscription plans.
With pay-as-you-go you can buy 30 hours for 30$, whereas subscription lets you have:

3 hours a day - 20$

5 hours a day - 25$

8 hours a day - 35$

Unlimited - 45$

Dedicated Server - 49$

Honestly with those plans I don't see why anyone would choose anything other than Unlimited,
I think they might want to consider making the prices for limited subscriptions cheaper.

All in all it's a fast solution, it spares you the time of choosing a Mac and waiting for delivery, configuration and what not, and it's a LOT cheaper at about 50$ a month.

So if you're planning to develop an app for the iPhone, and you don't want to have those extra costs up front, I think it could be a very good experience developing with Mac in Cloud.