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Table 1 Initial comparison of social network sites

From: Using popular social network sites to support requirements elicitation, prioritization and negotiation

Requirements

Facebook

Twitter

Linkedln

Google+

R1: Users communicate ideas

✓

✓

✓

✓

R2: Users comment on ideas

✓

✓

✓

✓

R3: Users express approval

✓

✗

✓

✓

R4: Control content distribution

✓

✓

✗

✓

R5: Dedicated space for group disc.

✓

✗

✓

✓

R6: Control group access

✓

✗

✓

✓