Thank you, and while I'm at it: thank you very much everybody for all the great feedback. It is very appreciated!
The session recorder is pretty cool, we think. We have managed to make it zero-configuration (i.e. no user configuration necessary) while still being able to handle client-side javascript. There are other HTTP session recorders out there, but to be able to handle javascript they're usually implemented as a true HTTP proxy that you have to configure your browser to use, or they're a browser plugin that you have to download and install.
The recorder outputs a load script that you can edit afterwards, if you want. However, the load script is currently more of a "list" of things to load, with pauses in between. It has no logic, conditional statements etc. and does not support parameterized data. This is something we intend to change soon though. It just needs some thought so we don't open up new possibilities for abuse/overuse of resources when we let users execute their own load script code on our systems.
One feature request that would have me signup in an instant is if you could provide web service load testing as well.
I'd also like to know more about the session recorder and if I can feed parameterized data into the scripts.