My personal favorite is Strange Ark, you can receive a newsletter regarding several current reportings. Downside is no discussion forum like this.

What's your favorite?

Yes...I know...typo in the header...
Nice way to begin your 2nd Topic in your favorite forum...huh...
Sorry about that all...

http://www.cryptozoology.com/
I'm not a member there though.

I like Cryptozoology.com myself and I am a member there. It's very scientifically minded and most posters have a wealth of information..
The nature of the board type they use, however; severely limits what you can do, so I find myself here much more often..

I like www.yowiehunters.com , how could I not I'm a mod on their forums.

If you're after Aussie sightings it's the place to go.

I am only a member here but follow many others, I am not generally into internet forums but was so impressed by UM, I broke my rule and joined, I will check Tia's yowie site as I have never seen that one, thanks for the link... I might join and misbehave so Tia tells me off. Lol

Cryptozoology.com

http://www.trueauthority.com/cryptozoology/main.htm is pretty cool. It has some links on the side to other crypto sites too.

my two favourite cryptd sites are behind my fridge and the shed at the bottom of the garden

This is a site devoted to my favourite crypid - Beast of Gevaudan Great articles by Derek Brockis - worth reading!

http://labete.7hunters.net

Thanks Moonlight, great link.

I find the Beast of Gevaudan such an interesting mystery.

I used to go here a lot but it's been real slow lately.
American Monsters