Spam comments are irrelevant or repeatedly posted comments, and forbidden in the Terms of Use, 3.5:
“Prohibited activities include ... Repeatedly posting the same material, or "spamming"”
• ★ • ★ • ★

• ★ • ★ • ★ • ★ • ★ • ★ •
https://scratch.mit.edu/terms_of_use/
More info: http://wiki.scratch.mit.edu/wiki/Spam.
• ★ • ★ • ★ • ★ • ★ • ★ •