This topic is pretty rude. Of course people have gotten BuddyPress to run “ok.” You’ve made a couple of posts on this site since joining, and they both seem to be about your dissatisfaction with the default theme. As @hnla says, most sites will want to customise the theme. The BP-Default theme lets you create child themes of it, so you can very easily and quickly put your customisations in place whilst maintaining functionality.
The third-party market for themes (free or premium) is limited, but that’s mainly because BuddyPress is a pretty new project as far as software goes. One of my favourite theme providers for BuddyPress at the moment is StudioPress; they sell a plugin called GenesisConnect which adds BuddyPress compatibility to a lot of Genesis themes — http://www.studiopress.com/plugins/genesis-connect
I’m closing this thread as it’s not very constructive; if you are really asking “where can I find BuddyPress themes”, search the forums or post a new thread asking constructively, and I’m sure people like @pcwriter will come along and share what they’ve found. If you’d like information about Pligg, I’d try their website or forums. When asking on a BuddyPress forum about Pligg, you’re only ever going to get any meaningful feedback from people who have recently used both BuddyPress and Pligg, and I’m willing to bet that’s a pretty small cross-section of users on this site.