Watched - I've seen every episode of the completed anime
Watching - Anime I'm currently watching and waiting for more episodes to be released
Stalled - Anime that I've either put on hold and plan to finish later or currently watching a completed anime
Action - Love the action anime, especially how well most fight scenes are done
Romance - I'm kinda picky with this one, I don't like it when it ends up as a harem but I enjoy watching the ones with a good relationship a perfect example would be Saito and Louise from Zero no Tsukaima.
Comedy - Can't get enough of good anime puns making me laugh so hard my stomache hurts (happened plenty of times)
These would be my top 3 genre but I prefer them together and not as a stand alone (Comedy isn't a must though). Although most anime aren't tagged with romance even though most have a good romantic element to them.
Slice of Life - This genre and those similer I don't get into because I don't really want to watch the giddy school kids going around doing everyday stuff (no offence to those that do, but it just isn't for me)
Harrem - Again not a genre to turn me away but I prefer it when boy and girl in relationship (romance) not when you have 5 girls after one boy. I tend to pick a favourite and cheer that one on while hopeing the others would just die, another example is Siesta from Zero no Tsukaima (yes, I'm refering to this anime again but it has many excellent examples and first thing to come to mind) Yes this isn't a harem but I simply hate her because she keeps interfering with Saito and Louise.
Ecchi - I don't exactly mind ecchi but when i get too much and too frequent sometimes it seems the anime is focusing too much on fan service and not the actual plot
Horror - I don't mind the scarey side of horrir but I'm not a fan of gore, when it's a bit too strong it can be a bit too much for me to handle and I need to stop for a bit. Yes I know it's only animeted but just have difficulty with it.
Well that's me and my preferences for now
At the moment I'm in the process of atempting to make a custom Sword Art Online signature. The one i have on now is one I made with the limited skills I have at this point and intend on trying something more advanced. I only made it during my spare time and don't have much time to experiment anyway (most of my spare time is spent towards anime :D), but let me know if you think it's good and what I could try to made it better.