Well, it certainly works for me, and works well, but the interface could be a little more intuitive for my taste.

I have been using this software for months without a single problem. If you are having issues then I would suggest contacting the developer.

Not found it very buggy myself - use it to back up a few folders, including onto a NAS drive (attached via Ethernet to my Airport base station). Sole issues have been (i) having to tell it to ignore small differences in file timestamps (or it thinks a file has changed & should be copied when it hasn't), and (ii) the useful Preview mode has gone wonky in the latest release - it now sometimes fails to show me what will be copied. Otherwise have had no probs. Am glad it copies over the .DS_Store files - so if all I change in a folder is the Get Info comments for a file, the changed comments do get copied over.

This is a very buggy program - recommend staying away from it.