1's good for SEO
but it's a bit hard to read all that crammed together. Good branding doms should be nice and easy to read (IMO. I haven't made a study.)
4 is disliked because it uses the word "associate." Unfortunately, so do a lot of empl*yers who decided that "employee" was declasse and wanted a euphemism! So the word "associate" is forever tainted in my mind. Amazon using it doesn't help, they're one of my worst performers, which taints the word even more.
"Partners"...that may sound good, but I wouldn't use it unless WordTracker shows that people are actually using that term in searches. A lot of times, the jargon-du-jour is not what most people are using. (Even if you don't expect to get most of your traffic from searches, WordTracker's search report will show what words people are using when they think of your subject.)
Edit--Oops, falling asleep here, I missed that ".info" on #3. It'd be better with .com; I can just imagine automatically typing .com and ending up somewhere else or getting a 404.
It is a beautiful thing, to do nothing, and then rest afterwards.~Spanish Proverb