The PERL/PHP decision was definitely not just about money. It was about how can we put out a better, if not the best, product. It may seem like a drastic move, but it is logical. I don't like everyone to feel like they need to hack their board to get the features they want. I'm not saying they shouldn't but I would much prefer for the features to just exist. But, when I was doing both versions there was just no possible way I could keep up with everything.
I realize I am still not going to be able to put in everything or do it fast enough so hacking will still be of interest to alot of you. There are already alot of hacks avaible for the PHP version and by concentrating on one version there will be even more.
And for those of you that just do not want to switch, period, the new site that is going to be created will be devoted to hacking both the PERL and the PHP version. So, if you'd rather just continue on using the PERL version I'm sure there will be alot of interesting hacks coming out for it because people won't have to worry about how it will break when upgrading.