What is the media name thing when u are posting a screen shot
The very short single/short word description of the file. Can use something like MyShot, My Plane... etc. Keep it short and sharp, have the long name in the description. RadarMan and co. use simple things such as JPEG - which is great.
so is it what kind of file it is
No, but you can use that just to fill it up.
Ratman, I've just seen your submissions. Sadly, we cannot accept BMP files. Please could you re-submit in JPG format?