www.Imageshack.com is another good site. You can also hotlink from some of the car sites, like
www.fquick.com Follow the screen prompts at imageshack for their new interface. Use the copy & paste URL method for non-photo sites.
Copy & Paste URL:
If you have a web url, you just need to wrap it in IMG tags, or use the pic box in the tool bar at the top of the box where you type. Another good tip: "QUOTE" a post you see and then you can see how they 'did it'.
[url_]paste link here[/url] (*replace _ with a space)
Using clickable thumbnails generated by photosites
With imageshack or photobucket, I suggest using their interface to make clickable thumbnails!
Full Photo:
Clickable thumbnail to full photo.

<-- clickable thumbnail that takes user to full pic.
*Select the pic/pics you want to post as clickable thumbnails - the check box under the pic
*Click the
Generate HTML and IMG Code button at the bottom of the page.
*Copy and paste the code in the 3rd box down titled "
IMG clickable thumbnails for message boards - recommended"
*Rock on with your bad self...
*Imageshack is different, follow the instruction on their site. Now you know what it should look like.
Another good thread about this topic.