I've installed a couple of Drupal modules on the site including Feedback, users guestbooks, invite and my buddylist. It seems with the modules help, Drupal based site has all functionality one could think of. However I could not find a good voting solution (a la digg.com) for Drupal. In fact in version 4.6 it had comments voting already built-in, but later it was removed from the core.

I've added support for the users profiles and their photos as requested by Vlad1977...

Please take a look at http://www.firstov.com/profile

Finally we've migrated Firstov.com website to Drupal CMS. Thanks all who helped with Joomla to Drupal transition and with graphics design elements!

Due to some issues with Joomla I'll be moving firstov.com site to Drupal.

It has more mature components that are well integrated with the drupal core and all modifications that I need I could do via phptemplate.