Two new(er), or at least possibly new to many LTH users, incredibly easy tools for posting photos.
Snag.gyhttp://snag.gy/Copy any image in a directory on your camera or computer to your clipboard (right click and copy, or highlight and ctrl + C), and then paste (ctrl + V) into Snaggy. You will immediately be provided with an image URL which can be pasted right into your LTH post - frame it with the img tag (highlight URL in your post after pasting, then click "img" at top).*
No account required. but bookmark your page or you'll lose track of it (there may be other ways to get back to it, haven't played with it much yet). For the moment, I think the site is trustable for longterm hosting, but post with caution (as with any hosting site), and check your posts periodically.
If it's already an appropriate size (600ish pixels, 100k-ish in size or less), no further modification is required. If it is a giant file or pixel size, you can use the crop tool in Snaggy to resize it (somewhat), or a third party tool to reduce size before pasting into Snaggy. I really like
IrfanView, freeware (to which I've donated), very low system resources and easy to learn.
Note that you can also use Snaggy to caption pictures. Not that you should, but you can also duplicate / rehost any existing picture from the web easily. Or, use Print Screen (prt sc key, upper right area of most keyboards) and then ctrl + V to post what's on your screen and crop it to the relevant portion.
*you may have to add an "i." in front of the Snag.gy URL to get the photo to display in all browsers, not sure why the currently generated URL isn't working tonight (it has in the past for me).
Imgurhttp://imgur.com/A ridiculously fast-loading and easy to use tool.
No account required, same drill on bookmarking your picture page to find it again. Select an image from your computer and web and upload. A few other (small) sizes are also generated, and very basic in-browser editing is offered. Message board code is generated for you on the left. Paste right into your post and you're set.
Again, YMMV, but for the moment both are stable and simple to use in case other procedures (like Flickr) cause you to not post at all. I am sure other photographers have other 2011 recs as well. Enjoy!