As of September 2014, YouTube's own keyword tool stopped working. It was moved over to Display Planner's AdWords video keyword suggestions. To use it, you need to have an Google Ads account. Just like the non-existent YouTube keyword tool, it was created to facilitate paid video and ads promotion. Which is why keywords that you will find there might not be closely related to the topic that you want to cover.
If you're okay with the pricing they offer – Ahrefs is the perfect solution for any content creators out there. You are able to step up your SEO game with data on number of backlinks as well as info on that particular site. But before you start using Ahrefs, try out what Google already offers first, maybe it will be enough for you in the beginning.
Detailed breakdown of all our key SEO metrics and performance history. It's very easy to compare our performance against competitors, and identify new opportunities to improve. The "link intersect" tool is amazing! You can easily see who's linking to your competitors and not your site, and work through the report list to build your presence on those domains.
We love the Intersecting Link Opportunity report, which helps us plan our link-earning strategy based on the semantic Web and relevancy. There really isn't a better way of finding industry websites to market with that could result in organic link wins. Our team has been using Ahrefs for as long as we can remember, mainly because it offers a higher volume of discovered links when weighed against similar tools.
What would be the purpose of/reason for moving back to a different url? If its been a few years, I’d leave it alone unless you watched everything decline since moving to the main url. Moving the forum to a new url now would probably be a bit chaotic, not only for your main url but for the forum itself…. Only reason I could imagine myself moving the forum in this scenario would be if all those links were really awful and unrelated to the url it currently sits on…