Selenium Question:

Dejaclick is probably the best (free) macro tool for websites record and play. However Selenium beats DejaClick in overall features(multiple language suport vs only XML support, free automation vs paid automation).
Dejaclick Advantage:
It nicely plays back the recorded stuff - by highlighting appropriate items in green.
It can easily record flash/silverlight - by recording position.(however it may mean that it may not
nicely work in all computers)
It has facility to encrypt sensitive data in your file.

Dejaclick easily allow you to bookmark your script. So that you can play it back in one click.

You can easily toggle Dejaclick to True Screen mode(ie recording by mouse positions) by pressing Alt + \
(some stuff are hard to record by name/ids)
Disadvantage:
Dejaclick recording tool is free - But for automation you have to rely on paid site alertsite (AlertSite however provides great facility for running your dejaclick script and even soap xml from most of cities/region in US/world. This will allow you to monitor your CDN performance/reliability or what content your website is serving across different regions)