It`s a common misconception that linked images in forums cause increased bandwidth. Overall they do, but as mentioned here, the increase isn`t at the expense of the forum. Whatever server holds the images is the only one that consumes bandwidth as the pic is delivered.
To the board, a call to display an image uses as much resources as a link to the image does.
Users on slow connections that don`t want to be bogged down by the images can set their "
User CP" options to disregard them. Go to "
Edit Options" and set the following option to NO:
Code:
"Show image attachments and [img] code in Posts?"
However, if the board really wants to save on the bandwidth used by serving up each page, they should set "Use GZIP" in the Admin Control Panel to YES.
(The recommended setting of level "1" is probably the best.)
What this will do is compress the output of the each page. For boards that don`t allow `attached` images (not `linked`), it`s the number one thing the admins can do to reduce bandwidth consumption. I`ve seen GZIP enabled forums save 40 to 60% on average. Yes, there will be a small hit on server load, but it is vastly offset by the size reduction of the files it has to send out.
One thing though: Admins, use phpinfo() to make sure you are not already running "mod_gzip" on your server before you set vBulletin "Use GZIP" to YES. If it is, then you`ll end up double compressing the output, increasing server load considerably without benefit.
Okay... that`s enough geek speak. I`m going to find out some more about some SP`s!