Flash

Flash player is a plug-in that allows your browser to play flash movies. Web designers love Flash movies because they can have lots of movement and interactivity on web pages. The download time for a web page filled with Flash is also very reasonable.

What you can do with Flash

Users like to browse in sites they're attracted to. Flash brings this excitement and feeling to a website.

Flash is also a good way of marketing. A user who opens a website finds interest in the colour and movement. In this way he'll be exposed to your products/services.

Positive points of flash

Complex Flash movies have reasonably small file sizes and this helps for a faster download of a site.
Interactivity can also be build into flash movies, which is very familiar for special effects on web pages.