Hello i'm a newbie , appraise my names. i'll start from the first domain i bought to the most recent.

jibba-jabba.net - has a site, it's a pr2 i think and gets about 40/80 visitors a day
abyss-websites.com - has a site but not much traffic
chatzoneplus.com - has a site but domain is expiring very soon and i'm not sure if i should renew
mybbforums.net - has a site, it's a pr3 but when the index.php shows its a pr2 gets about 60/120+ visitors a day
tarsa.net - Currently parked but may devolop into a blog or forum community

Most of the domain names above are reg fee.

I still can think that tarsa.net might get something

Others are just random .nets and the ones that are .coms are not so good.

i think mybbforums.net is a good one there. Could be around $50 or so...