Gordo Ur Home World Answer.

10:33 AM 05/12/09 Artifact use: CrazyMaverickTNM planet land increases by 65 !
10:15 AM 05/12/09 Artifact use: CrazyMaverickTNM planet land increases by 21 !

21 land increase was a Minor Gordo.
65 land increase was a Major Gordo.

HomeWorlds only increase with the Major Gordo.

Alot of STC`s, Minor Alimento, Minor Cosecha, Minor Gente artifacts.
How to better use the Major Gordo, well personally i havent tested it but most artifacts are best used when you have a high luck factor, gording ur planet is just random, hasnt proven to have a luck factor RULE in its design. Another luck factor with artifacts is they normally do better when used during rare / uncommon dig times.

Upside of Gordo`ing ur homeworld instead of another planet is for A.miner/Terran you can never lose ur homeworld, so the land you increase it to will be a life-time investment you can never lose.

Downside is getting up to dig constantly, to get enough required artifacts to make major gordos.

If anyone else has experience with Major Gordoing Luck factor please contact me to give me more insight.