[marcusEting]

If you are a Dropbox Pro user I think you get the packrat addon, which allows for unlimited history / undeletes. So, while the amount of files you can keep in your DB is limited, the amount of data that DB has to keep up with for you could get very large.

I don't see that they have anything to counter this in their model, and it kind of worries me that if people abuse this then they will remove the feature for all users, and I like my unlimited revisions.

[DanLar75]

I would say that Dropbox (being a really super company with a great product) has issues that are actually even larger than the storage cost.

Dropbox is based on Amazon S3, which means that not only do they have storage costs to a 3rd party that are so to speak 'out of their control' but they are also dealing with bandwidth and transaction costs.

I wish them all the best, however I can imagine this being quite expensive for them considering the amount of free users they have.

[limmeau]

As the Dropbox clients talk to Dropbox servers instead of directly to S3, Dropbox can just transparently migrate their data to a storage facility of their own when they decide that that has become cheaper than S3.