We just released version 0.3.4 of the Efficient Related Posts plugin for WordPress. It uses the new Xavisys Plugin Framwork (I’ll post more info on that soon), which gives it a nice new options page, links to the support forums, etc. We also did a lot of the work toward internationalizing it, and hopefully it will be fully translatable int he next version (coming soon).
If you want to request a feature, or need support, go to the Efficient Related Posts Support Forum. More information is available on the Efficient Related Posts page.