Hello,
Curse.com had beta keys, or still has, but for Canada and USA only.
Sure you can use a VPN and get them, but that seems a little excessive.
Here's 2 more sites.
At the time of writing MMORPG.Com has about 14,000 keys left.
Both sites - you need to be a member.
Gamespote - also a member, and over 18. Lie if you have to
Here's direct links:
GameSpot Beta :: Star Wars: The Old Republic
Star Wars: The Old Republic Beta Key Handout!
These are most likely for weekend tests, but it's still beta none-the-less.
Enjoy!