Hi,
We have just launched Mingle Trips (http://www.mingletrips.com). Travelers can meet each other while traveling to some of the most popular destinations in the world.
It will be awesome if you guys can try it and give your feedback. Best way would be to create a trip to London, UK for 30th - 31st October since there would be some overlaps.
Since we have just launched, there will not be too many matches in other cities for now.
Thanks. Manas