From publisher blurb:
Internet Arcana is a compendium of the entire SRD spells and magic items plus 30% OGC material (over 60 pages!) from e-publishers (Version 3.0 Only). Massively hyper-linked for user convenience, Internet Arcana contains over 4,500 links and anchors, bringing spells and items to your fingertips faster than ever before.
What makes Internet Arcana so useful?
1. Spell and magic item lists are hyper-linked to individual spell and item descriptions.
2. All spell descriptions list the magic items created with that particular spell, which is hyper-linked to the magic item description.
3. All non-SRD material is clearly indicated with red titles in both the lists and descriptions.
4. All non-SRD material is credited to the orginal source and the company that published it. These are also hyperlinked for customers interested in a particular supplement or company.
5. Besides extensive hyper-linking, Internet Arcana is fully bookmarked, indicating all non-SRD spells and magic items in red.