Never used Vircurex and LocalBitcoins because they were not popular here. But I started on bitcoin.de in 2012 and after the birth of shitcoins and, later on, the ever growing Altcoin Seasons, I also used Cryptsy, Bittrex and Polo. Never forget Tristan's boss move of dumping Polo on Justin Sun's sorry ass, right at the top. The best trade of all, even though it was obvious that this would mark the beginn of Polo's downfall, quickly followed by Bittrex who imo became a casualty of an ever growing arrogance towards their users.
Still remember the fontas pumps on BTC-e. Man, this guy taught me my first lesson. 20 BTC taken, poof, gone.Then chat moderator bumface created his own shitcoin which wasn't even traded on BTC-e. What a time. I feel I was quite a bit younger, back then, lol

But "a good percent", that's a good chunk, well worth waiting for. 👍