WATERLOO, Ont. — BlackBerry is selling the majority of its commercial real estate holdings in Canada, but the struggling smartphone maker refused Tuesday to say how much it expects to make from the deals.

Waterloo, Ont.-based BlackBerry said it plans to use a combination vacant sales and sale-leaseback arrangements in divesting the properties.

The company did not put a value on the real estate holdings but said those being offered for sale comprise more than three million square feet of space.

"BlackBerry will not comment on the potential value of a sale and will disclose further information as required in connection with any definitive sale transaction,'' it said in a release after markets closed.

The company is working with CBRE, a commercial real estate company that provides financing and management services in conducting the sales.

"BlackBerry remains committed to being headquartered in Waterloo and having a strong presence in Canada along with other global hubs,'' CEO and executive chairman John Chen said.

"This initiative will further enhance BlackBerry's financial flexibility, and will provide additional resources to support our operations as our business continues to evolve.''

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  • The iPod

    For more than three years, iPod sales <a href="http://www.zdnet.com/the-ipod-is-on-life-support-7000001573/">have been on the decline</a> as Apple users opt for iPhones and iPads instead, according to ZDnet.

  • Landline Phones

    If the last time you gave out your home phone number was in elementary school, you're not alone. Half of Americans have <a href="http://www.mobilenapps.com/articles/5976/20121228/landline-phones-dying-u-s.htm">gotten rid of their landline</a>, according to a recent survey of 20,000 households by the Centers for Disease Control.

  • Newspapers

    The economic downturn accelerated the decline of the newspaper industry, as advertisers continued to pull their dollars. More than 100 newspapers <a href="http://www.businessinsider.com/the-death-of-the-american-newspaper-2009-7?op=1">shuttered in 2009 alone</a>, according to Business Insider. And the downward spiral isn't over; circulation is plunging and Wall Street is getting frustrated with the industry, <a href="http://www.ajr.org/article.asp?id=4111">according to the American Journalism Review</a>.

  • Film Cameras

    Yes, there was a time when you had to wait days to see those photos of you and your friends from last night. But thankfully for all of us narcissists, those days are coming to an end. Cameras that actually require film, a dark room and non-digital albums are on their way out as evidenced by the<a href="http://www.huffingtonpost.com/2012/01/04/kodak-bankruptcy-chapter-11_n_1184101.html"> bankruptcy of photo giant Kodak</a> last year.

  • Video Rental Stores

    With Netflix, On Demand, HBOGo and a variety of other video watching services available, the days of going to your local (or giant chain) video store are numbered. Once a go-to spot for tweens looking for a Saturday night activity, rental giant <a href="http://dealbook.nytimes.com/2011/03/10/bankruptcy-judge-approves-sale-of-blockbuster/">Blockbuster filed for bankruptcy</a> in 2011.

  • Blackberries

    Once the go-to gadget for business people and BBM-loving sorority sisters alike, the Blackberry has lost its cache (and <a href="http://www.therecord.com/news/business/article/844005--rim-shares-fall-on-report-of-declining-u-s-market-share">marketshare</a>) to the iPhone and Android. The brand <a href="http://www.usatoday.com/story/money/business/2012/10/08/brands-most-value-lost/1619827/">lost 39 percent of its value</a> last year, according to 24/7 Wall Street. We can't say we'll miss those blinking red lights.

  • CDs

    Nowadays all a physical CD really has to offer is album art. And the numbers prove it: CD sales <a href="http://www.cnn.com/2010/SHOWBIZ/Music/07/19/cd.digital.sales/index.html">accounted for 20 percent</a> of overall music sales in 2009 compared to 90 percent in 2007, according to CNN, prompting the news organization to ask "Is the death of the CD looming?" We say, yes, probably.

  • Classified Ads

    Creepy listings for sex, cars, puppies and apartments have now moved to the internet. Classified <a href="http://www.poynter.org/latest-news/business-news/the-biz-blog/100565/classified-ad-revenue-down-70-percent-in-10-years-with-one-bright-spot/">ad revenue plunged 70 percent</a> over 10 years in the decade leading up to 2011, according to Poynter. Thankfully you can still find all of that stuff on Craigslist.

  • Hand-Written Letters

    The days of waiting for a letter from a loved one (or lover) are long gone. Don't believe us? The agency responsible for carrying those letters has <a href="http://www.huffingtonpost.com/2012/07/16/going-postal-what-would-a_n_1677892.html">been on the financial edge for months</a>. You can thank email, scanners, the cloud etc. for that.

  • Bar Soap

    Bar soap sales have <a href="http://www.startribune.com/business/yourmoney/127246443.html?refer=y">dropped 85 percent</a> over the past 20 years, according to the Minneapolis Star Tribune, largely because Americans are starting to believe bars are less hygienic than gels or body wash.

  • Floppy Disks

    With CDs, USB drives, the cloud and countless other ways to transfer information on your computer, floppy disks have gone out of fashion. But don't worry, there are still many uses for square data holders -- you could <a href="http://www.huffingtonpost.com/2012/10/09/craft-of-the-day-floppy-disk-planters_n_1951187.html">turn them into vases</a> for example.

  • Bottled Water

    As consumers become more concerned with using environmentally-friendly containers, <a href="http://www.startribune.com/lifestyle/blogs/127299188.html">traditional bottled water</a> may soon be on its way out, according to the Minneapolis Star-Tribune. Coca-Cola and Pepsi, which both make bottled water, are already trying to use less plastic in their bottles.

  • Stick Shift Cars

    As cars with automatic transmissions are becoming cheaper and more fuel efficient, the reasons to buy a stick shift <a href="http://content.usatoday.com/communities/driveon/post/2010/07/stick-shift-death-watch-automatics-costing-less-better-mpg/1#.UOYI5Injlsl">car are disappearing</a>, according to USA Today. Soon engaging the clutch could be a thing of the past.

  • Encyclopedias

    With Wikipedia and countless other internet sources available for looking up useful (and useless) information, encyclopedias are soon to be forever enshrined as an item on your grandmother's bookshelf. The proof: Encyclopedia Britannica announced in March that it <a href="http://www.huffingtonpost.com/2012/03/13/encyclopaedia-britannica-online_n_1343263.html">would be stopping its print edition</a>.

  • Fax Machines

    We can't say we'll miss this one too much. With email and scanners, the fax machine will thankfully soon just be a <a href="http://www.guardian.co.uk/technology/2009/jul/14/fax-machine-mia-farrow">subject of office lore</a>.