re: don't think you understood what I said a few times
BUt if you want to ensure any chance of getting the attention of beings
who live many light years away in the galaxy (it doesn't have to be 200 -
could be a lot more, could be a lot less) and have active astronomers in
their culture, a supernova or pulsar or transitting planet are some of the
few ways to go. That is the advantage over a random search.
And while looking at Sol-type stars has its merits, I think we should
also be checking out infrared sources far from the galactic center.
http://arxiv.org/PS_cache/astro-ph/pdf/0506/0506110.pdf
http://home.fnal.gov/~carrigan/Infrared_Astronomy/Fermilab_search.htm