Though imgur works great, you can upload your images to your Steam profile, then click on the "view full size" option of your image and get the URL from there. Here's an example from Dear Esther.

Orcs Must Die!

Burn Orcs Burn!

Far Cry 2

Burning House
In the land of the Rising African Sun
Bullet Wounds
Watch The World Burn

Amazing.

I don't have anything that looks groundbreaking, but here's some humorous screenies!

I don't even know how I managed to fly this far
Let's die together!
I wonder how much it hurts to clip into something like that
Chillin' Medic

Some others:
Always aim for the head... (SS:TSE)
Just me and my zombie friend chillin' (HL2)
DAT ASSSSSSSSSSSSSSSSSSS (GMod, I don't know why I made a bunch of KonataXCreeper images, but I did <_>)
While you were busy saving Palmtree Panic, Robotnik had caught up in some... Other... interests... (Sonic CD)

That's good enough for now, I've got plenty more though.

Vampire: The Masquerade: Epic Dance Party (I couldn't think of a DDR pun)

I don't remember whether I already posted these two:
This would've been a cool shot if the UI hadn't killed it.
Rabbit Batman is terrifying.

Just a few shots sharing some moments from (some of) the games I played.

Khan took me to church.
The boys near the campfire.
Friendship goes beyond death.
Exposure can make you fuzzy.
Favourite all-time weapon.

Vamps Vamps Revolution?

Bump with Dreamfall pics! Very pretty game, sadly I forgot to take pictures in Casablanca. I assume we'll return at some point though. I also didn't get any pics of Mr. "I Run Like A Dork" (i.e. Kian), but we'll see him again eventually too.

(Click on the image to see 'em full-sized)

Azadi...land. Or whatever the Azadi call their capital.
April being sneaky in Marcuria. Note: This section didn't actually need stealth, I just thought it made the pic look better.
April looking out at Marcuria from the top of the Azadi Tower.
Zoe standing in the rain in Venice.
Zoe looking vaguely confused on a Marcurian street.

Also: Jefe's Serious Sam bloom makes my eyes melt.

Double bump!

Stacking: Charlie Blackmore, Action Hero.
Syberia: I absolutely love Syberia's opening movie. Probably my second fav after Grim Fandango.
Fallout New Vegas: Looking threateningly at something just off camera?
New Vegas: This Caravaneer can clearly take care of herself.

Who says Battlefield 3 is just another brown colorless FPS:

http://images2.wikia.nocookie.net/__cb20120606112914/battlefield/images/c/c8/SPAS-12_FPV.jpg

*Shakes fist* Now you reminded me that I want to get ME3.

Ooh, nice one.

More New Vegas because that's mostly what I've been playing (the DLCs, specifically). These two are from Old World Blues:

http://steamcommunity.com/profiles/76561198024472825/screenshot/1154297601684408024/?tab=public "I used to be cool... Then I installed Old World Blues." Kidding, of course. I really like the wacky 50s Sci-fi feel OWB has. Speaking of which:

http://steamcommunity.com/profiles/76561198024472825/screenshot/1154297601685050402/?tab=public Rockin' the mad scientist look in The Sink.

http://steamcommunity.com/profiles/76561198043070022/screenshot/939250719448494960/?
- A shot from my dwemer skyship at night time, Not as beautiful as skyrim can look with the proper mods, but damn if it ain't good. Also, Notice that if you have the king of riverhelm mod that it doesn't seem to load up till you get close to it. (It should be visible in that picture but its not.)

http://steamcommunity.com/profiles/76561198043070022/screenshot/939250719448493639/?

Another shot from the Dwemer skyship, This show's just how vast Skyrim can be at times. I will be posting shots of S.T.A.L.K.E.R SoC and Burnout paradise later.

All right, here I can annoy you people with my Morrowind screenshots!

A panoramatic view of Ald Ruhn
Mysterious Daedric shrine with unknown horrors lying within
Dusk at Khuul
An abandoned Dwarven city
A pack of tamed guars
Beautiful view of Soltshem from the shores near Khuul
An ancient tomb
Quite a height, that.