I'm going to add to what Sam said with a bit more specifics.
I use photobucket. I upload my photos on there and I edit them by doing "auto fix" and then cropping them so they're just the way I want. Then I use the "direct link" option to get the address to the picture.
Once I've done that - then I come back here and do my review. When it comes time to insert my picture I do it this way:
If you look a the links and formatting information - I use the first bracket with the img and follow it with the "|" which is right above the caps lock.
So mine would be something like
(the beginning of the link) photobucket address.html
followed by the closed bracket
There is no space between then "|" and the address. By the way, the "|" is found right above your caps lock and you need your caps on to get it.
I hope this helps.