For my new project I actually have both. I am hoping to launch my new forum over the next month or so (then I'll start linking it etc). I developed the forum a few weeks ago using DOMAINforums.com though I bought DOMAINforum.com today via an auction. I was keen on doing this as it stops a competitor launching a similar forum at DOMAINforum.com, plus it will allow me to pickup traffic from people who enter the domain name incorrectly (which is quite common).
Here´s the thing. I could simply do a 301 redirect from forum.com to forums.com and keep things as they are. DOMAINforum seems to be a more popular search term though switching is probably not a good idea as the social media profiles are taken on Facebook and Twitter for the other domain name.
So to summarise:
- DOMAINforums.com - Slightly less competitive search term though I own the profiles for Facebook and Twitter.
- DOMAINforum.com - Appears to be searched more often and more competitors are using the term on their own forums as page titles and website names (despite not owning the domain name). Unfortunately, the Facebook and Twitter profiles are already being used by others.
- Will Google rank my forums.com domain name higher for the 'domain forum' keyword due to me redirecting the DOMAINforum.com domain name towards it?