Usually both username and avatar/signature, I sometimes recognise writing style and use of emoticons too.

[img]http://img545.imageshack.us/img545/553/pokepsychosig2.png[/img]

some by nickname, the ones I know better,
and some by avatar.

clickI THINK EDWARD CULLEN IS UGLY.click

I try to remember nicknames, but the avatar comes first.

Would I lie to you?

At the end of the day, it's best to just remember the nicks, since you'll
never know when some crazies decide to have the same avatar/sig. o.o;;

source: animenewsnetwork

Join SRoMU Scanlations or visit #SRoMU at IRCHighWay.

Quote from Dr. Love

At the end of the day, it's best to just remember the nicks, since you'll
never know when some crazies decide to have same avatar/sig. o.o;;

ain't that the truth.
Just when you think you're being original and hip, BAM, some jerk steals your sets.
I like using nicks to remember

Quote from Dr. Love

At the end of the day, it's best to just remember the nicks, since you'll
never know when some crazies decide to have the same avatar/sig. o.o;;

That can be annoying. DX

I mean, who wants to see so many monkeys/clowns in one day? D=

[img]http://28.media.tumblr.com/tumblr_lq2hczRc5d1r1rvcno1_500.gif[/img]
Monkeys, always at your service.

Quote from NightSwan

I have to thank you again. It's been a while since I've had this much d**k on my computer. :'3

Quote from kaerfehtdeelb

Quote from Dr. Love

At the end of the day, it's best to just remember the nicks, since you'll
never know when some crazies decide to have same avatar/sig. o.o;;

ain't that the truth.
Just when you think you're being original and hip, BAM, some jerk steals your sets.
I like using nicks to remember

Sometimes that is just a coincidence but yes it's best to remember people by their username

Quote from LawX

Quote from kaerfehtdeelb

Quote from Dr. Love

At the end of the day, it's best to just remember the nicks, since you'll
never know when some crazies decide to have same avatar/sig. o.o;;

ain't that the truth.
Just when you think you're being original and hip, BAM, some jerk steals your sets.
I like using nicks to remember

Sometimes that is just a coincidence but yes it's best to remember people by their username

That's the best thing to do.

Well, right now avatar and sig sets are obviously far and away the best way to tell people apart.