Check out some of the latest MakeUseOf discoveries. Most of the listed websites are FREE or come with a decent free account option. If you want to have similar cool website round-ups delivered to your daily email, subscribe here.

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App in the Air – People who travel frequently find themselves spending a lot of time on airports. Their time is often spent finding things: finding the best coffee place, finding out where the Wi-Fi spots are, etc. What they could use is a tool that helps them find out this information along with other helpful pieces of information specific to the airport they are at. Here to help you offer that service is a wonderful tool called “App in the Air.” Read more: App in the Air: The Must-have iOS App For Frequent Flyers

		Plizy – There is such a multitude of videos online that it is next to impossible to get bored. However, the problem with watching videos on the Internet is that you generally have to search for what you want, and you can’t just sit back, throw something on and enjoy it mindlessly like you can with a TV. Plizy hopes to change that. Read more: Plizy: Personalized Video Recommendation Engine [iPad & Android]
		BillGrid – If you are a freelancer or business owner, keeping track of your invoices and expenses can feel like a full-time job unto itself. There are so many things you need to remember. If you need a full-featured tool for keeping track of you expenses, invoices and estimates, than you should look to BillGrid. Read more: BillGrid: Professional Online Billing & Invoicing Application
		Pollmo – Online polls are an engaging way to interact with your website’s audience and getting them to participate. Although there are numerous web apps that let you create online polls, they often bother with details such as signing up for an account or confirming your email address. Doing away with these inconveniences and providing you with a straightforward online poll-creation tool is Pollmo. Read more: Pollmo: Quickly Create Embeddable Online Polls
		Pinterest Image Expander – Pinterest is an interest-based social network that is growing exponentially. It is not a Facebook or Google+ yet, but millions of people use it to share stuff. One little nuance however, is that you have to click on a thumbnail to view a larger version. This Google Chrome extension solves that by expanding the image when you hover your mouse on it. Read more: Pinterest Image Expander: Expand Pinterest Images On Mouse Over

These are just half of the websites that we discovered in the last couple of days. If you want us to send you daily round-ups of all cool websites we come across, leave your email here. Or follow us via RSS feed.