I've been searching for a key all day, i can't find a link.

You don't need a key.

Some people like to use these betas past 120 days.

its already installed, all i need is the key.

No, I am also waiting.

i found a way!

http://www.maximumpc.com/forums/viewtopic.php?t=87766

i used it, it works, you just have to refresh 50 times, or open 10 tabs, and refresh 5 times.

It redirects to Microsoft.com for me

make sure you are logged in.

Got my key, now to activate.

i tried a good while but ill just wait

redirects to the MS home page now =(
anyone wanna share? apparantly it is the same key...

I got a key, but its from Microsoft Connect so its unique to me... Can't share, sorry.

Yeeha, got one!

Apparently this key works with any language? I tried with English and German and I got the same key. I always thought product keys were language dependent? I also tried with Japanese but it doesn't work there.
Funny sidenote: Google translates 現在、このサイトで技術的な問題が発生しています。大変ご迷惑をかけいたしますが、翌営業日に再度お試しください。 to "We're a technical problem with this site. We spent so much trouble, please try again the next business day." )

I just want to confirm it gives EVERYONE the same key.

Here is the first half of the key:

CQ22W-MD73V-VR

If someone else who also got this method to work could post the second half of the key.

I've got a different key...

I to got a key, eventhough i am not a technet subscriber.

I got the key the first time I visited that website, I didn't need to do that refresh thing

Got mine, completely different to the one posted up there ^^
I tried the whole, check4change thing with firefox, and kept getting redirected.
So, i gave up.
Tried again, one last time for a laugh, and what do you know? It worked

Yeah, it seems Microsoft has sorted out the problem, I already get my key too

There's a very limited number of keys anyway, all keys out there are one of the following:
64Bit:
Product Key: 7XRCQ-RPY28-YY9P8-R6HD8-84GH3
Product Key: JYDV8-H8VXG-74RPT-6BJPB-X42V4
Product Key: RFFTV-J6K7W-MHBQJ-XYMMJ-Q8DCH
Product Key: D9RHV-JG8XC-C77H2-3YF6D-RYRJ9
Product Key: 482XP-6J9WR-4JXT3-VBPP6-FQF4M

32Bit:
Product Key: TQ32R-WFBDM-GFHD2-QGVMH-3P9GC
Product Key: GG4MQ-MGK72-HVXFW-KHCRF-KW6KY
Product Key: QXV7B-K78W2-QGPR6-9FWH9-KGMM7
Product Key: 4HJRK-X6Q28-HWRFY-WDYHJ-K8HDH
Product Key: 6JKV2-QPB8H-RQ893-FW7TM-PBJ73

how many keys are there in total?

Count?

10 keys there, that 11th one that isn't complete might just be a mistake by the person who sent me the list, since he didn't seem to know what the full one of that was either...

no, i mean't how many unique keys is microsoft giving out?

That IS all they're giving out for the Public beta... Technet/MSDN is probably different, though I don't know for sure.

I notice that too. I keep refreshing the page and got the same keys.
This is what I got (exactly the same):

x64
7XRCQ-RPY28-YY9P8-R6HD8-84GH3
JYDV8-H8VXG-74RPT-6BJPB-X42V4
482XP-6J9WR-4JXT3-VBPP6-FQF4M
D9RHV-JG8XC-C77H2-3YF6D-RYRJ9
RFFTV-J6K7W-MHBQJ-XYMMJ-Q8DCH

x86
4HJRK-X6Q28-HWRFY-WDYHJ-K8HDH
GG4MQ-MGK72-HVXFW-KHCRF-KW6KY
QXV7B-K78W2-QGPR6-9FWH9-KGMM7
6JKV2-QPB8H-RQ893-FW7TM-PBJ73
TQ32R-WFBDM-GFHD2-QGVMH-3P9GC

Note that since the keys are not unique, I am not violating the rules.