Would like to add my 2c worth.
Windows 7 comes with SNIP IT tool. A bit easier than PrintScreen and , some are unable to get PrintScreen to work.
Also, Imageshak requires registration and charges you for multiple (bulk) image upload
Try ACIA NET
http://img.acianetmedia.com/
No registration and FAST
You can upload multiple images if you want and it processes them all in one click and gives you the direct link for all.
For recording a game, or a few holes etc...
Use Microsoft Expression / Screen Capture, free download.
http://www.microsoft.com/expression/products/encoderpro_overview.aspx
Takes a little bit to work it out though.