Mac

Sometimes, the easiest way to share a funny conversation or picture is to take a screenshot and send it off. There are lots of options for screenshots: you can grab the entire screen or just a selection, and choose to save it to the desktop or the clipboard.

Here, find out everything you wanted to know (and more) about taking a screenshot on an iOS, Mac OS X, Android, or Windows device, and discover two cool apps that will upload your image to the web automatically for speedy sharing.

iPhone, iPad, iPod Touch

Press the Home button and the sleep/wake button at the same time to capture whatever is on the screen. The image will be saved to your Camera Roll.

Mac OS X

To take a screenshot, you can open the Grab application or use one of these keyboard shortcuts (to cancel out of any command, press escape).

• The entire screen — Press command + shift + 3
• A select portion of the screen — Press command + shift + 4
• Only a window — Press command + shift + 4 + space bar and select the window. It also works with the menu bar. This option will capture a window's shadows which looks nice in presentations.

The default setting on Mac OS X is to save the screen capture to your desktop, but you can save the image to your clipboard instead by holding down the control key while you press the other keys as listed above. This will enable you to paste the image into a document.

Apps exist that will automatically upload your screen capture to the Internet. Cloud App is a Mac desktop client that sits in your menu bar and will create a link to the image, then put it onto your clipboard. The app will notify you when the image is done uploading, and you can paste the link wherever you want. Droplr is similar: drag screen captures into the app, and Droplr will create a link for you to share.

How to grab screenshots on Android and Windows devices after the break.

Carine Roitfeld is the name on everybody's lips right now — literally. As she gears up to launch her biannual magazine, CR Fashion Book, the former Vogue Paris editor is also releasing a collection of cosmetics with MAC. Known for her kohl-rimmed eyes and beige lipstick, she's curated a selection of colors and tools for the signature messy-chic CR look. The goal isn't about looking perfect, she says. "Sometimes 'bad' things are the more beautiful things," she says in this behind-the-scenes video. "When you woke up and didn't take off your mascara, your eyes can be tired, but tired-sexy — and that's what I like." The collection will be available online beginning Thursday, in stores Sept. 6, and on our faces tout de suite.

MAC is gearing up for Fashion Week with a new lipstick by a popular provocateur. Rapper Azealia Banks collaborated with the brand to create a semimatte blackberry lipstick named for her alter ego, Yung Rapunxel. The shade is in line with the vampy lip color trend seen on the Fall runways, and we think it embodies Azealia's risqué style. The color will be available online on Sept. 5, just in time for New York Fashion Week. In conjunction with the release, MAC is hosting a Fashion's Night Out performance by Azealia at its SoHo store on Sept. 6. So if you're in the 212, stop for what is sure to be a spirited set.

"Normally, everything starts to go down, but that goes up," says Carine Roitfeld of the effect her newfound obsession with ballet has had on her posterior. "I had to give all my skirts to the seamstress, and she had to add five centimeters. That's a lot."

In a recent Harper's Bazaar profile, Roitfeld says that she works out to "try to be in shape to be a young grandma." She also says that she doesn't have time to eat — or to read her old magazine, Vogue Paris. And with good reason: in addition to launching her magazine CR Fashion Book, she's been busy working on her upcoming partnership with MAC. Read on for her thoughts on that — and more.

On working with MAC: "I'm not bad-looking, but I'm not a beauty either. I think I have character, and that is what people like in me," she says of the campaign image, which features her in a slip dress. "I think women can recognize themselves in that picture. They see, 'Oh, she's not wearing too much makeup; she's not too much dressed; she's not too much bizarre. She's very much like another woman — simple.'"

On the staff of CR Fashion Book: "I'm using new people, so I'm going to fight to make them stars. It's very risky. I like to take risks. It's very exciting in a way. It's a bit Steve Jobs, no? Each day is a new challenge to find the model, the photographer, the money, the location, you know?"

On not reading Vogue Paris: "I have not looked at French Vogue. It's like a divorce in a way. It's still very fresh; it's still very like my baby for 10 years. I prefer to take a big distance; maybe next year, it will be finished. I don't do the magazine because I want revenge — you say, revenge?"

On her trim figure: "I don't eat a lot, to be honest — never. I'm a bit like a little bird, picking all day long, but I'm not getting pasta or getting all those things, you know? So I think it's my morphology. I've always been skinny."

Come to find out, Macs aren't virus-proof. There's a new trojan virus spreading through Mac computers at an alarming rate — over 600,000 could be infected now, 57 percent of those being in the US. The virus disguises itself as an Adobe Flash Player installer, and after you've installed what you think is an update to Flash, the malware then seeks out passwords and log-in information stored on your computer.

There are a few ways to find out if your computer is infected, but there is also one simple way to prevent the effects of the virus — download the latest security update from Apple! This will close any loopholes and vulnerabilities in order to keep your computer (and your information) secure.

Source: Flickr user neenio

If you're not one to wear head-to-toe green on St. Patrick's Day, might we suggest experimenting with the color on your eyes? Green eyeliner makes a statement, and a variety of hues means there's an option for everyone. From top: Tom Ford Eye Defining Pencil in Metallic Moss ($35) is the perfect choice if you're ready to take a baby step into color. CoverGirl Queen Vivid Impact eyeliner in Jade ($7.50) is a slightly shimmery, more verdant hue. The creamy formula of MAC Pearlglide Intense eyeliner in Undercurrent ($15) leads to a sparkling fusion of green and blue, and if a straightforward green is too literal, there's always Dolce & Gabbana the Khol Pencil in Peacock ($29) — an aptly named, highly saturated teal to wear on March 17 and beyond.