Hi, I am a newby also on the forum, I hope I am not doing stupid things to fast.
Celebrating the recently published "Horn of Africa" guidebook, we are planning a a extended tour (January, 2011) covernig Yemen, Socotra, Djibouti, Somaliland and Ethiopia. The goal is to see all the safely available endemics and to make further exploration. This is not a commercial tour, everything is cost-shared and self-payed. I had been to everywhere there but Somaliland. All the ground toperators are top-notch, whose serving all the birding tours as well.
For more please visit my page: http://www.greeneye.org.uk/tours_birding_horn.htm
Please drop me a line in case you are interested in!