In my book, there really is no 'best' way. You just have to keep implementing the ideas you've given and be patient.

Post your forum on alphainventions.com and fiddlewiddle.com.
I posted my blog up there yesterday and in the past 12 hours I've gotten about 6,400 views!

I have just checked those sites and they are amazing. I mean they really works. I just submitted to them and i got 10 visitors in just a min.

nice contents.. high value + reliable

Join many forums and blogs related to your website and try to build good reputation by participating in the discussion effectively, soon you might discover some improvements and get traffic from it.

Hi,

Promote your site through all means which includes Onpage optimization, Offpage optimization, Affiliate Marketing, Socila Media marketing, Link building.

Google -- > search internet marketing forum
Sign in, then post some topic and do advertising your site.
Keep patient.

I actually suggest the following:
1. Constantly put ads on whatever free online bullentine boards you can - as long as you are not violating the communitie's guidelines.
ex. I have posted weekly ads on Craigslist for a Yahoo Career Related Group to recruit members.
2. Recruit potential members via blogs and sign off with info on your group. It depends if your posting gets approved.
3. Plug plug plug at offline events!

'

Join the forums and raise the questions and reply for others question also surely u can see more no of backlinks to ur website

I started Ausscene last month, at the end i June i had 18k visitors and in this month i have had for this month sofar 29k for this month and its not over. I was worried when i had no seach results but they finally got on google after 20days.