Who can Donate blood:
Any fit adult without serious illnesses or transmissible infections can donate blood. Though donating blood may not add to your health, at least it is not adversely affected. In addition, it's a great social service.
Online vs offline (book) directory:
- Anyone can access anytime, where as in case of book, need to contact the organisers, and may not be possible all the time
- Donor list presented in random order in the online site; in the book, the persons on the top of the list may be called more frequently
- In case of online site, can edit the contents if the donor changes his number or residence, which is not possible once the book is published
- Can add more donors' name especially ones who benifited by it, may want to enlist their name