Hey guys just wanted to report my findings! I'm using a 3GS on 3.0.1!
Ok so i deleted most of the "safe to delete" deamons from the guide then rebooted, before reboot 159mb free ram after reboot 161mb free ram! This wasn't enough of course lol so i then decided to delete Every language pack in the phone other than english/en using ifile, it took me over an hour and trust me if there was a lproj that wasn't english on this phone AnyWhere, theres not now! Free ram after several reboots still 161mb!
Then after realising this isn't that effective on a 3GS (unless you delete system heavy processes that will in turn fudge your phone up and defeat the object of having it in the first place) i deleted the modded "launch daemons" folder and restored the original (backup) rebooted and guess how much free ram i had now... 164mb
I'm not saying this doesn't work or it does i'm just reporting my findings on a 3GS... Hope it helps
Matt