this is 1st time i have heard of it, can u tell me how it works???
To auto-spectate during a tournament, you first have to have the console enabled. Once that's done, when you log into the game, bring up the console and type:
dota_spectator_auto_spectate_games [tournament ID]
To get the [tournament ID] value, go to here:
http://dota2.cyborgmatt.com/leagues.php
So let's say I was auto spectating the GEST tournament; I'd enter:
dota_spectator_auto_spectate_games 59
When I was done, or if I wanted to leave, I'd enter:
dota_spectator_auto_spectate_games 0
After that it auto-joins the matches as soon as they pop up, and as soon as you close a match it auto starts with the next match. This way you can still spectate the games without having to sit there and click each of the matches.
For example a week ago or so they had a tournament for $1.99, so I bought a ticket, watched a few matches, then ended up going to sleep. I left my DOTA2 client on so that I could get any tournament drops from spectating various things like multi-kill, first kill, courier death, etc..