DotA or formerly DotA Allstars is one of the most played maps in Battle.net and in Warcraft 3 general. It is based on the Aoen of Strife maps originally made in Starcraft. The map is very well suited for hosting with GHost++, since it enables stats tracking. With programs like Dota Allstats you can display those stats in the web.
To host DotA you need the newest version, otherwise you don't get much players joining. Secondly to enable stats tracking, you need to make a map config file and enter the following values:
map_elo_type = dota map_type = dota