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Every day we're on the lookout for ways to make your work easier and your life better, but Lifehacker readers are smart, insightful folks with all kinds of expertise to share, and we want to give everyone regular access to that exceptional hive mind. Help Yourself is a daily thread where readers can ask and answer questions about tech, productivity, life hacks, and whatever else you need help with.
The holidays are coming up, and for many people that means traveling. Today's topic is air travel, so use the comments to ask and answer your questions about how to breeze through security and make the most of your time in the air.
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Dear Lifehacker,
iOS: When friends are trying to figure out who paid for the last meal and who owes whom the next drink, they rarely say, "I treated you to a $30 meal last time and your last treat was just $21." OU1 (pronounced "owe you one") embodies this philosophy by tracking who owes whom a drink, a lunch, or a dinner.
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One of the biggest differences between both suites is the amount of storage you get. iCloud gives you 5GB for free, for all iCloud services—that means if you fill up that space with documents, you could stop receiving email, and if you get email with huge attachments, you might run out of space for documents or photos. Google, on the other hand, gives you lots more space for free, and splits it up by service: Gmail gets a little over 7GB for free, Google Docs gives you 1GB for uploaded files (but 
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Dear Lifehacker,
Landlords who manage multiple properties but have a local office are generally a good option for most people. Of course this will depend on the specific landlord, but assuming you find one you like you won't have to deal with a lot of the problems you'll encounter with a corporation or a single-unit owner (detailed in the next section). Local landlords with multiple properties will care you take care of the property but generally won't have an excessively watchful eye. So long as you take good care of the place you shouldn't have any trouble. You also will have an easier time negotiating rent increases if the proposed amount is too high. Although this type of landlord owns multiple properties, tenant turnover still has a greater impact than it would on a corporation. On the whole, there are generally no major upsides or downsides.
Landlords managing only a single property, such as a condo or home they can't currently sell, have some significant advantages and a few disadvantages. When renting from this type, you'll often be expected to keep their place in great shape. They once lived there and they're going to want to sell the property some day, so it's very important it looks good. This is especially relevant when they are trying to sell their property. You'll be able to stay as long as your lease allows, but if you plan on living there awhile you may find that you're uprooted sooner than you'd like. It can help to ask the landlord if they plan to sell at any point in time, but they may not be forthcoming with this information as they don't want to risk your departure.
Once you've picked a type that works best for your particular situation, it's time to do a little research. Review sites like 
If you've had a string of bad landlords, it's worth considering that you might actually be the problem. In the same way you should examine any problem, if you and your behavior remains the same in each instance there's a good chance you're the problem's common denominator. Be sure to take an honest look at your behavior before blaming every landlord you've ever had. It's entirely possible they've all sucked, but if you're ruling yourself out you're not looking at the entire picture. If changing your behavior and expectations can solve the problem, that will be a heck of a lot easier than finding the holy grail of landlords that always seems just out of your grasp.
iPad: 500px is a new iPad app that lets you browse some of the web's most interesting and attractive photos, and then use your iPad as a digital photo frame to display your favorites, the best from the 500px community, or your own photos, set to a soundtrack from your iTunes library. 