How much is your website worth?

An interesting website offering free domain name appraisals, which I think it means how much a website is worth?

Check on few websites and finding as below in USD$:

dyxum.com -> $90,288
photokaki.com -> $14,012
jeffooi.com -> $2,298,240
friendster.com -> $1,490,848
google.com -> $898,552,844
yahoo.com -> $1,523,846,985 (that's one and a half billions... for a domain name)

Some bloggers:

smashpop.net -> $52
glaringnotebook.com -> $2,709
kennysia.com -> $375,000 (wow... already a millionaire in M'sia)
xiaxue.blogspot.com -> $262,140

Mine? -> $34

I will sell it if it reaches 4-figures one day :p