Left this as a comment on the blog posting, but felt it might be worth reiterating here: An important addendum to "I will use existing libraries where poss

Left this as a comment on the blog posting, but felt it might be worth reiterating here: An important addendum to "I will use existing libraries where possible" -- you should also pledge to share those implementations freely. This will allow your implementations to enjoy the same scrutiny that the implementations of others have (cf. "I will only use vetted and published algorithms") and enrich the development community. Without this bit -- especially if your target audience is average developers -- you're inadvertently condoning ignorance due to lack of peer review.