Well, a couple of things stand out right away:
1) You make no mention of redsn0w 0.9.2.
2) In the 3GS PwnageTool guide you give instructions for unlocking with blacksn0w when there is a good chance that anyone using PwnageTool will have preserved the 4.26.08 baseband (and will therefore need to unlock with ultrasn0w)
3) In your 2G guide links point to 3G/3GS guides which will not work for 2G phones; namely, you advise users to unlock with blacksn0w, which will not work on 2G phones!
4) You do not make any differentiation between firmware versions, baseband versions, etc.
5) You do not make any mention of the fact that 3GS phones and iPod Touch 3's on 3.1.3 cannot be jailbroken.
6) You do not make any mention of the main reason for using PwnageTool: preserving the 04.26.08 baseband and the ability to unlock with ultrasn0w.
7) You make no mention of tethered jailbreaks.
8) Your tutorials are formatted very poorly, with text overlapping images and screenshots.