Be careful with free hosting as you may wake up one day and you won't find your site anywhere ... and free domains are usually for an year. Best...
Since you have them both you can use .biz and redirect .info to .biz. From many perspectives like seo or resale value the hierarchy goes like this...
To avoid scams you can use escrow, it's good for this kind of procedures.
According to this dnjournal.com/articles/cctld/us-growth.htm it seems that food.us was sold for about $20000 so it seems they have good resale value.
I think he says the site was banned from google search not from google adsense...
What about ene.my ... what would this one purpose be?
You may find that .info is harder to get in front of .com on SERPs...
I prefer .net over .org. Anyway it is okay to buy them if they sound good and .com is not available
Always check the REAL page rank before buying and avoid being sorry for losing the money.
In my opinion the hierarchy is .com, .net, .info search engine's eyes. I don't think the user cares if it's a .net or .info
I don't think I understand what you want...
start with the forums, sitepoint and then move upward
Separate names with a comma.