Lara and Paul are a young Canadian couple who spent a couple of months in 2005's summer traveling independently around Eastern Europe. With an itinerary touching on Slovenia, Croatia, Bulgaria, Romania and Hungary, along with visits to Greece and Turkey, much of what they saw and did is useful and interesting info to help in planning your own trip.
You can read their blog at Lara and Paul's Euro-East Adventure, as well as see their "Top 60" photos (they cleverly deciding that exposing their friends to 900 photos was a bit too much). Their tales of night trains to Bucharest (interrupted at 4am) and night "trains" in Croatia (that loaded them off into toilet-less buses in the middle of the night) give more than a few useful tips, along with some funny stories. Border control stories also feature, such as the laborious process of getting from Turkey into Bulgaria by bus, with several passport checks and bus and luggage searches - sounds familiar to me too.