It was a VERY bad decision on his part to abandon the project. (At least he'll provide private support for people that have purchased a license.) Call recording is a MUST.
Let me cite him:
"Also, the official repositories did not want to host this application, perhaps for the same reasons that I am stopping it for."
Surely not. See Call Recorder for Skype, which has been on BigBoss for more than one year. And it's completely WITHOUT any kind of warning.
And, let me add again and again, there are tons of other call recorders for more open platforms. Heck, Bada 2.0 even supports starting call recording right from inside the stock (!) phone interface. None of their devs have ever received any threats etc and, yes, none of them play any warning. many of them even suppress the hardware-generated beeps on Symbian.