For now I'm only using apps from the market to change the minfree values (could be done from commandline, but I like to have GUI for that, as it's less likely I'll mess it up). I followed the values proposed by the author of SuperCharge (which are also not his, but use some minfree calculator) for 1GB RAM and set it to 8,16,200,220,240,275 (explanation here: http://forum.xda-developers.com/showthread.php?t=622666)
But there are other tweaks that can be done with it, I believe, that's why I asked..
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