I would make sure the main domin is a .net or .com if you're starting out.
I've had this weird issue on my .us domain
I have had people try to refer others, even I have tried, and the people are like "Red dead dot us? Don't you mean dot com? Let me try dot com. OR did you mean dot net?"
But I'm pretty sure this is all down to your audience. Clearly, if it's a webmaster/tech oriented community you won't have that issue >.>
.info is exactly what adam said, simply "pulling a Microsoft"
I do it! It's kinda nice, but I do it because I had someone squatting on a company .info and .org a few years back and they were beating us out on google for a few terms? Not that we actually tried to get ranked by google *most of our traffic is from word of mouth/business cards* Then they tried to sell us the domain -.- for $$$$
I don't like that lmao
GoDaddy tends to offer me a $1 .info or a free .info so I just take it for the year. If it's less than $5 to renew, then i'll renew otherwise I let it go.
To be honest, .com is cheap, as is .net, .org etc. ~$10 a year for a domain is bloody great value! Personally I'd PREFER prices to be around the $50 a year mark as it would reduce the number of squatters.