Small and fast = )

Digital Photos can be quite large, especially as camera manufacturers are continually upping the megapixel count, often without improving the image quality. If you just want the photos for a website, blog, facebook or to email to relatives, you usually don’t need to send the full image. In fact you can do your bit for more responsible use of band width but optimizing the size of your image. Even if you have a reasonably fast net connection you will probably find that the conversion time is more than rewarded in upload time once you are processing more than one or two photos
Image Optimizer is really neat service (with a free downloadable version, that can do bulk conversions). I have previously posted about windows live & picassa’s ability to export & email smaller version of photos.
Here is a useful table for common sizes, you can click on the size descriptor to see an example of that image size.

Suggested Pixels	Max Width	Max Height
Small Web Photo	640	360
Blog Photo	400	300
Email	800	600
Flickr/Photobucket	800	600
Normal Print 10 by 15cm (4 by 6”)	1200	800

Remember which ever approach you use, keep the original photos and just use the converted files for the upload or email (then delete them)