There is a proliferation of online file storage and transfer services on the net these days, and most of them are free services supported by advertising, with additional revenues from premium subscription services. The new leaders, according to Alexa, are Megaupload and RapidShare, both of which are in the Alexa 100. Mike Arrington reviewed a variety of services last year, and of the sites he reviewed, it looks like Mofile, a Chinese YouTube-like site, has the only site that is significant in terms of traffic. Here are some of the services that have top-ranked Alexa placements or Google search rankings.
Least Restrictive:
Megaupload
The big daddy of all the file transfer sites, Megaupload currently has an Alexa rank of 16. Free accounts get up to 50 GB of space, with files up to 1 GB each. Free users must wait up to 45 seconds between downloads to show advertising, while premium accounts take away that restriction. Premium accounts get 250 GB of storage with unlimited file size upload for $9.99/month, or a lifetime membership for $199.99
RapidShare
Unlimited free uploads for files 100 MB or smaller, with no download limits, although heavily downloaded files don't have parallel downloading and may encounter a maximum MB/hour limit. Also, files that are not downloaded for a period of 45 days are removed from the system. Premium users can pay 6.99 Euros/month to have these restrictions removed.
sendspace
At less than 2 years old, this company has an impressive Alexa rank of 108. Offers free file transfers of up to 300 MB, and files up to 1.5 GB on premium accounts. Premium accounts range from $11.99 to $49.99 per month, with unlimited uploads & storage, as well as 4 GB of daily download bandwidth.
YouSENDit
YouSendit claims
transfers of over 1 million files adding up to 30,000 GB daily. You
upload files to their servers, and send an email to the receiver with a
download URL. Files are available for download for up to 7 days. You
can transfer files up to 100 MB for free, but can pay to send files up
to 2 GB. Subscription plans are between $4.99 to $29.99 per month, and
allow for more downloads and longer file availability.
Xdrive
This AOL-backed company offer 5GB of free online storage, with 50GB for 9.95 a month.
Most Unique Offering:
VMN.net
Possibly the stickiest online storage service of the group, if they could get everyone to download their software. With 1 GB of free online storage, this Canadian company offers its services through a Google/Alexa-like tool bar, with Yahoo!-based search, Alexa rankings, RSS feeds, popup blockers, and more. Offers 15 GB of storage for CDN$12.95/month.
Other:
Yourfilehost
Allows files up to 25 MB to be uploaded and served from your website. With no premium services, this service is supported entirely by advertising. A file remains active only if it has been downloaded in the last 14 days.
4shared
1 GB of free space, with unlimited access and bandwidth. Premium accounts get more space, and start at 2 GB of space for $5/month, to 5 GB for $10/month.
Yahoo! Briefcase
Not a lot of fanfare for this Yahoo! offering, probably because it's largely hidden and offers only 30 MB of free storage space, without any upgrade options.
Box.net
This Mark Cuban backed venture has drag and drop access to a online hard-drive through widgets and RSS feeds. 1 GB: free / 5 GB: $4.99/month / 15 GB: $9.99/month
There are plenty more out there. Like most other businesses, the 3 biggest players will dominate and thousands of smaller companies will follow. Although all of these companies are private and no sales breakdowns are publicly available, I suspect that advertising will drive success on storage sites. Note, for example, the success of Megaupload, which offers generous file size limits but forces users to view 25 - 45 seconds of advertising for free downloads. Those relying primarily on subscription revenues will be relegated to niche markets.
For the entrepreneurs out there, most of these sites continue to be great resources, providing free or inexpensive access to infrastructure that used to be prohibitively expensive. One less excuse to not starting that online venture!