Hello guys, about a year ago I launched a forum: http://Crowdfundingforum.com. Although it is doing very well with traffic, only a small sliver of the traffic si via Google. I am afraid to do any paid or unpaid SEO as I know Google has been penalizing for some SEO tactics. What would you recommend I do to help the forum get ranked better in Google? This could be a paid service or just something like article writing. Looking forward to your suggestons!