Advantages

• Increased information linking: Semantic web will help in the connectivity of online data.
• Efficient searching
• Better marketing.
• More efficient web browsing.
• Effective communication.
• Change human interaction.

Disadvantages

• Less advanced devices will not be able to handle Web 3.0.
• Web 1.0 websites will seem that much more obsolete
• It can be very complicated for newcomers to understand.