Bloodmyst Isle is a zone on the continent of Kalimdor which has an environment of Red Forest . Bloodmyst Isle has quests for players leveled 10-20. The area is controlled by the Alliance and should be avoided by the Horde. Bloodmyst Isle has 0 dungeons and raids resident in this zone.
Bloodmyst is a small island to the north of Azuremyst Island. Azuremyst Island is the starting zone for Draenei characters and which also contains the Draenei captial, The Exodar. This is traditionally the zone that Draenei players will come to come after reaching level 10 in Azuremyst Isle.
For the rest of those people who are not Draenei, the only reason for coming here would be to get the appropriate achievement, those being doing the required number of quests for the zone, the exploration and the Noblegarden achievement for the Alliance.