It does the job, but the interface is a bit overwhelming. I recommend the developer take a look at the Session Buddy extension for Chrome, and see how much simple and more intuitive something like this can be.

And maybe it's just me, but I wish there were a way for it _not_ to keep lists of automatic session backups, or at least to limit them to a certain number. The only reason I'd want automatic backups is if the browser crashed and I lost a bunch of open tabs---and in that case, all I'd want to do was restore the single, most recent session. It just seems like overkill to have long lists of them whether you want them or not. Thanks!