The news is a mixed bag for me. I'm a huge Sam Raimi fan, and I blame the mess that was Spiderman 3 on the studio, not Raimi. Sam didn't want Venom or the convoluted storylines, but with so much money invested, the studio pushed and got a trainwreck. I think Raimi could have fixed the franchise, but again it sounds like the studio didn't like his direction, so they've canned the project and decided to reboot.
I think it's great that Raimi is standing his ground, and won't get blamed for another horribe Spidey flick. At the same time, I'm pretty concerned at what Sony has in mind for a reboot. From the sound of it, it looks like they'll be looking towards the 'Ultimate Comics' version of Parker for the new Spiderman franchise. Done correctly it could be great, as Ultimate Spiderman has consistently been one of the best comics of the last decade. It all depends on the creative team behind the new flick