This is completely wrong. The value of DMOZ is research on any topic including commercial enterprises. Even non-profit organizations and research established need to generate revenue (grants/donations) for operating expenses, and labor of love has nothing to do with it. Point #1 covers this.
This is wrong. The guidelines suggests once, but in either case point #1 covers this as well.
Noting most companies with their own category didn't have their own category when they started or DMOZ started. Why this discrepancy?
Editor specific. A short description is better mind you and DMOZ guidelines suggests 25- 30 words. (seems rather long to me though).
This is wrong, and very much time dependent. Fixing typos is always permitted, and should the contents of your site change I believe an edit is in the best interest of DMOZ and DMOZ users.
[edited by: fathom at 4:47 am (utc) on Dec. 1, 2002]