There are tricky situations where you do not have your cloud service client installed on the system from where you want to upload a file. And most free cloud services do not provide FTP access. FTP2Cloud is a new service under development using which you can upload a file via FTP and that will be automatically copied to your cloud space. Current features:
- Supports Amazon S3, Rackspace and Google
- 100MB space for free which is also the file size limit
- No copy limits
- Setup is easy. Example video.
The service is still in Beta so expect glitches. But you can always mail support to report issues.