I have several dozen shareware apps installed, more of a handful of them in the System Preferences. Saft being the one not only requiring the highest frequency of updates (i.e. every time Safari gets updated, you need a new Saft version as well, or you can't use it) but also being the most difficult one to perform the update.

Problem with the update is that it requires you to enter your email address and transaction IDs. It does NOT store them for you, neiter in a cookie for the website, not inside Saft so you could easily retrieve it. Instead, I have to dig it up every time from somewhere again. Sure, after 3 times I have learned to write them down in a place where I hopefully find them more easily next time, but it's still quite a pain for such little gain.

Otherwise, it works pretty well.