To improve page ranking & seo do some link swaps / exchanges with other webmasters that have good PR sites that relate to your website content. The following phpbb forum offers this for free – [url]http://www.linkexchangeforum.co.uk[/url]
Also below are must have PHPBB MOD’s to help with SEO and Page Ranking.
1 – phpBB SEO Ultimate SEO URL
2 – phpBB SEO Dynamic Meta tags
4 – Sitemap FX
3 – SEO URL phpbb gallery v 1.0.5 (only if you have the PHPbb gallery Mod)