Will these affect the value of domain name?
1) the or not the - domain name with or without the prefix
yes can hurt unless the is part of the name (such as thebears.com)
2) s or not s - domain name end with or without s
usually prefer w/o the s but sometimes plural makes sense (freedownloads.com, games.com)
3) forum or talk
Can help or hurt depending on the market but would limit the domain to a message board
5) 1 or one and so on
usually just hurts unless again the 1 is integral to the name