SlideBoom is a new launched Web 2.0 service which let users share their Power Point presentation online. Two more similar service are Scribd and SlideShare.
You can upload and share their presentation files without registration. But, these files will be removed from the server within one week, unless you create an account, which is free also. The maximum file size is limited to 30MB and currently they only support .ppt and .pps format (Power Point 2000, XP, and 2003).
Unfortunately, pdf format is not supported, which is the main disadvantage compare to other similar services such as Scribd and SlideShare.
However, SlideBoom provides an interesting feature for its users, which allow you to convert the presentation offline before upload. The conversion is done by a free software called iSpring Free.
Note: SlideBoom not support Open Office document (.odp). So, make sure you create your presentation slide in Microsoft Office format before upload.
Tried SlideBoom its amazing. There are many other alternatives for SlideBoom, like SlideShare, authorSTREAM and SlideServe.