After recent Dark Ages games IRL I wanted to play some online. I thought I'd give Goko a chance. I have similar complaints to many others, but there are only 2 things that I care about at all. They are correct implementation of the rules and interface, and a reasonable match making system.
OK, so I hate to be blunt, but Dominion has rules, and if you intend to sell it to people, you should have them right! The Interface should also work. I still have trouble with Chrome crashing, and in a recent game I played Band of Misfits was not displayed properly. It is just a blank gray spot where the card would be. I was very confused when the computer asked me what I wanted to trash to a Knight attack: a Laboratory or an empty gray card.
The match making system is REALLY important to me. I play dominion to play with other players of a reasonable skill level. I'm currently level 40, and typically set isotropic to +/- 20 levels, but am fine playing with anyone above 5. I'm just looking for someone I can have an interesting game with. On Goko, I play on the "Pro" leaderboard. Without any system set up for match making of equal skilled opponents I usually host a game and play with who ever joins. This is much slower than some sort of auto match system, but I'm more concerned with finding some one of equal skill. I played 5 games on Goko today, and 3 of them players left half way into the game because it was so lopsided. I'm fine with resigning, but i would like my games to be competitive.
Here is a log to one of the saddest games of Dominion I've ever played. I felt bad during the whole game, and was sorta glad they left so i didn't have to drag it out. I'm not trying to make fun of the person I played, just trying to state that we shouldn't be playing. We were all new at sometime, and its fun to learn the game, but not against someone who is 40 levels above you. On a related note, I would advise against Rats/Chapel as an opening.
http://dominionlogs.goko.com//20121216/log.50775a4a0cf28ed55d9d6fd3.1355727003701.txt