Why my pictures are so small?

My pictures are so small. Obviously I must make a mistake. What is the size I must upload? I use the 150 x 150 pix. When I look at your pictures, I can see all the details.
Regards.

If you're posting pictures to this forum then we tend to use pictures that are 800 pixels along their longest side. Hope that helps!

Use 800 to 900 pixels on the longest side

Hefty beat me to it.

If you go above 800 pixels you will start to spread the forum thread from side to side.

A maximum of 800 will make for easier viewing for more members.

Thank you all for your advice

ah... ok. i'll bear that in mind as well as i had been processing my images at 1200px. mind you, if i host them on flickr then link to the smaller size for this forum then that's a good workaround.