Would be fine if the software continued to work with caveats results might not be as good(advanced web rankings does this). It doesn't. If you don't update, its rendered non functional.
I've got a copy of clicktracks I bought when you could buy it one time as standalone software. I still use it occassionally. It's got super tight licensing so that it'll only install on one PC. Need to transfer it, you have to call in. they've long since ceased selling this software, but to their benefit, the last time I called in they still got my software running on my new PC. They weren't really happy with doing so, but they did do it.