Tony makes some very important points here, some of which are already
in the FAQ. Maybe this is a good time to remind everyone to read the FAQ,
http://www.stata.com/support/faqs/res/statalist.html
As an additional tip, if you want the data to be available and you have
your own web page, just put the data on the web and provide a link or an
appropriate -webuse- command. With large data sets I do that rather than
send attachments, and it is definitely better to do it that way than to
include the data in the text of an email message. Also, if the data file is
already in Stata form, more people may be willing to take a crack at the
problem than they will be if they have to take your listing and create a
Stata file themselves.