We all know about DropBox for free online file storage and sharing. But there are many other companies out there offering the same service for free, and one of the most popular and well functioning ones is Box ( formerly Box.net ). Box provides simple, secure sharing from anywhere – letting you easily store files online, send big files fast, access content on-the-go, and collaborate with others.
Normally, Box provides users with 5 GB free account with a 250 mb file size limit. Now, Box have partnered with Teambox, the cloud-based company redefining collaboration and business communications, to offer 15GB Free Online Cloud Storage for life to anyone. 15 GB never expires, valid for life, worth €9.99 Per Month. *Offer valid for new box accounts only, so existing accounts won’t be updated. But as long as you have another email address, you can get the free 15GB + Sync Box account, with a 250 MB file size limit and 10.0GB Bandwidth limit.
Sign up for a free 15GB + Sync Box account https://cloud.box.com/signup/o/teambox
Alternative offer [updated on February 14, 2013]: Box.com offers 50GB of Cloud Storage FREE for Life
Box.com offers 50GB of Box.com Cloud Storage Space for free via this link. This is meant for Dell advantage customers who can share this offer with their co-workers and friends which can be us too. Offer is valid for new customers/sign ups only, so existing accounts won’t be updated. But as long as you have another email address, you can get the free 50 GB Box account, with a 250 MB file size limit and 10 GB monthly shared bandwidth limit (calendar). It doesn’t say how long this offer will stay free, so if you’re interested I’d sign up sooner rather than later. 
Updated [Jan 15, 2013]: The old promo (Box.net 25 GB Online Cloud Storage Free with HelloSign/Fetchnotes) has expired. But here is another new promo: You can now get 15 GB of Online Storage from Box For FREE With Teambox. I have updated the post with the new promo.
August 5th, 2012 on 12:06 pm
two cents
1 – https://www.box.com/signup/o/hellosign_25 works w/o hellosign registration (frankly, it’s not so fair but if you are invited by someone you have no choice to cancel automatically generated account by hellosign)
2 – there is no possibility to download folders form box.net for this account, just file by file
nvm, thx William
August 5th, 2012 on 12:24 pm
thanks for bringing this to attention
September 6th, 2012 on 8:58 am
I tried the Box.net 10Gb promo which was released in this blog about a month ago and was really disappointed! You upload a file to your account and they say “You need to upgrade to premium before you see links”…meaning that you can’t place a link to your file(s) for people to download. I dnt recommend this service for anyone.
September 7th, 2012 on 2:15 am
@Sharemore, thanks for your suggestions. I think we can still use this services for online storage (but not for sharing)
January 6th, 2013 on 1:53 pm
The updated link for the offer is expired. The link is redirected to normal signup page.
January 6th, 2013 on 2:36 pm
@Xi, Offer expired now. Thanks for informing.
January 15th, 2013 on 2:20 pm
@Xi, the giveaway link is working again.
February 7th, 2013 on 4:40 am
Thank you william
February 7th, 2013 on 4:56 pm
Thanks for the update William.
February 15th, 2013 on 1:25 pm
Thanx
February 15th, 2013 on 2:06 pm
Thanks a lot,Nice Information.
February 15th, 2013 on 4:19 pm
thank you, this is truly nice
March 11th, 2013 on 12:54 am
New cloud storage service with at least 10GB FREE! http://goo.gl/3TOxF hurry up before they drop this generous launch offer