-All the games I've significantly played (in my entire life) are added. All the games that I bought are added too.
-I always write the game name as it appears on Wikipedia, regardless of it being different in my version.
-If I don't actually own the game, I specify how I played it (like emulation, pirated games and so on).
-Demos obviously don't count.
-If I borrow a pirated game, it doesn't count as
Borrowed, but as a pirated one.
-If I own (or at least

) a game on more than a platform, it is added more than once.
-I consider
Owned all the games that belong somewhat to my family, but if I they aren't mine and I've not played them, they aren't added.
-I consider

even the games beaten with the help of walkthroughs, cheats or savestates; I usually specify if I did it in that way.
-Emulated/pirated games are "converted" into
Owned as soon as I buy the original game, even if this happens after I

the non-original one. I keep in the backloggery both original and non-original ones only if I played different versions of the same game (i.e. Pokémon Ruby: emulated JAP version, bought PAL version).
-I usually don't put in
Now Playing the games that I pick up every now and then. I do most of my retrogaming in this way.
-When possible, I add a "started date", as well as

/

/

dates. This only applies to big entries, like RPGs and all games that have a considerable longevity; I often don't do it for simpler or shorter games.
-Every time I do a gaming session of a
Now Playing game, I update it, eventually adding informations about how far I am.
-I often use the
Achievements field to add more information of how far I'm in the game (like how many Pokémons I got, or the completition percentual if the game has it). If the game is on a platform that has real achievements, I just use that field for them.
-Achievements are unrelated to the

of a game, unless that game has these achievements also built inside itself (like Left 4 Dead 2 or Worms: Reloaded), in that case they are not extras to me anymore.
-I usually don't consider free games and flash games, but since there are some relevant ones (and not all flash games are free), I'm starting thinking that some of them deserve an entry, like Meat Boy.
-I often play A LOT of games at the same time, I know, but I can't do much about it.
PS: keep in mind that I need to fix my list because
1) I previously used to use the ghost icon for non-legit games, from now on I'll use the "Other" icon for them.
2) Many ratings are still on the 4 stars system that was before.
Oh and that's my website:
[Link]