The primary reason I capped it at 200 is because I wasn't sure how quickly the database would fill up with the new software. Once it went live, the database got really bloated really fast and kept running out of space. The culprit turned out to be the search engine, so I rewrote how that works, almost completely removing the data bloat and increasing its speed in the process.

I just bumped the PM limit to 500 because I see no reason to cap it any longer at such a low amount. Hope that's enough for a while.

I also just thought of a new feature to implement: full text search of your PM box. Sound useful?