I like independent trips so I avoid tours packages. But sometimes I need to find a trip companion or to make a small group in order to reduce expenses (i.e. rent a car) or to reduce risks (i.e. big trekking without guide).
The problem is that I can't find a website that join independent travellers. I use Couchsurfing website and ask in forums, so I'd like to know if there is any online resource specific for this topic.
NOTE: I've try to search "trip companion" in Google, but all first page results seems to take me to dating sites except the first one that takes to Lonely Planet forum.