Tweaking SSD's depends on the type of SSD and what your using it for. Some, like flash drives, need to be protected from constant journaling (like in ext3), or the constant time stamping. Then there's the problem of turning off journaling and dealing with power failures.
I remember when the eeepc first came out and advertised 8GB SSD, then, when people started playing with it, there were stories about how the first 4 GB were on a fast SSD (a true SSD whatever that is), while the later 4GB were a cheaper form without the same i/o speed (I guess more like a flash drive).
I guess when the prices drop and file systems like brtfs (I think) enter the mainstream, then I'll start playing with them more.
A couple of articles I found that are interesting:
http://www.mp3car.com/vbulletin/linux/125019-tuning-linux-ssd-operation.html (Post #4 is interesting)
Yes, there was one hidden away in the Linux.com archives (next to Indies box)
There was more info in this article then just benchmarks.
Hope this helped.