You need to have a good connection to the Internet to be able to use Flickr painlessly. If you are working in regions with slower Internet infrastructure you may want to resize the photo to a smaller dimension before you upload it. Photofiltre is a simple and small Windows application that you can use to resize your pictures. Photofiltre is provided free for private, non-commercial or educational users (including non-profit organizations). You can download a copy of Photofiltre at http://photofiltre.free.fr/frames_en.htm
Another free windows software that can help you resize and clean up pictures is Picasa which is owned by Google. You can create an account at Google and you can use Picasa to upload pictures to a “Web Album” service that Google provides.
Nokia’s N-Series phones now support direct uploading of photos to Flickr. This may be a good solution for situations where you want to upload pictures on the move. The cameras on these phones are as good as stand alone digital cameras. You need a GPRS or 3G mobile subscription to use this feature.