Reddit mentions of 99 Ways To Flood Your Website With Traffic: Website Traffic Tips

Your question is not LP-related, but traffic related. What you asked for is not a landing page strategy, but a "bring traffic to the page" strategy.

There are two paths with traffic: Free and paid. Search Google for both.

You have already chosen a free one. For a beginner, free path is probably the best option. For paid traffic you need a ton of experience and lots of money, although the results can be very good; but only if these two conditions are met.

Your choice of forum posting is a good one, as long as you take the time to do it properly (no spam, provide useful content to those communities). There are hundreds of other ways to do this, like social media, youtube videos, pinterest, hubpages, and more.

I've recently purchased a book on Amazon that is full of ideas for getting free traffic. http://www.amazon.com/Ways-Flood-Your-Website-Traffic-ebook/dp/B009HJLV3A/ref=sr_1_1?s=digital-text&ie=UTF8&qid=1412270188&sr=1-1&keywords=99+ways+to+flood+your+website+with+traffic

For me it was a lot of help with very low investment - $3.71. I've spent $200 on individual courses, teaching me far less than that.

Hope it helps.