We have not filed for provisional patents. I'm not sure we would have a position on it one way or the other. We know they're out there. They can be a place holder.
For those of you who don't know about provisional patents, you can file a paper saying you have a great idea and if you're clear enough with the specification, a year later you can file the actual claims of a patent and you would get the priority date on which the provisional patent was filed.
When we have ideas, we want to get them filed these days, so we go straight to the claims and avoid the other step.