In order to better secure my server I've been thinking of forgetting the tradional FTP over sftp which is a secure FTP connection over SSH. How would you guys think this would effect clients? There are free clients out there for sftp, and most paid ones like WS_FTP Pro and such have support for it. But do you guys think that this can discourage a client from signing up?
You have to consider your potential clients true knowledge versus perceived knowledge of computers and the internet. I know we still get lots of relatively inexperienced people asking our support staff exactly how to FTP files to their domain.
It could be possibly that by using technologies that are not generally used by most internet users, you could be limiting your possible client pool.
The more advanced computer/internet user will not have any problems, just those who are very new to the whole idea of being a webmaster.
Or you can look at it this way. You can walk a person through using plain old FTP to upload their files, or walk them through using an SFTP client. Either way, you're going to be walking the Internet Challenged through one program or the other, to them, it doesnt matter which.