Reader only, I'm afraid. If I start writing a story the chances are it'll never get finished.
I love slash, time travel and dimension travel fics. Harry Potter, Stargate SG-1, Stargate Atlantis and Alex Rider stories and especially when they're used in crossovers.
I rarely give a bad review and if it isn't overly positive it always gives a bit of constructive criticism, at least, I hope they do...
I despise the phrase 'Little did he/she/they know'.
An interesting story is more important to me than a well written one (to a point, of course). I'm not brilliant at grammar myself, so I don't expect everyone to be perfect, but when someone writes 'Should of' instead of 'Should have' or 'Should've' I want to punch them. Mixing up homophones is annoying, yes, as is misuse of apostrophes, but they don't aggravate me nearly as much for some reason.
I also apparently have a strong sense of fairness and justice and have had to stop reading a few stories when one of the characters *cough*Dumbledore*cough* goes too far and I felt my chest getting tight, the vein in my neck throbbing and I couldn't stop hurling abuse at him in my head. Most of the time I do inform the author (via review) that I am unable to continue and my reasons for this - if anything it's a compliment to their skills that I am so invested in the characters that I have a physical reaction.