I have some picture on flickr can it be use like photobucket
Yes. Click on your picture, and it will open up. Then click on All Sizes (on top of image). Underneath, you'll find a box containing the HTML code for your picture. Click once in the box and it will highlight the code. Copy it (Ctrl + C), then go to your GardenWeb post and paste (Ctrl + V) the code into your post. Done!