TO MOD - SUSPICIOUS ACTIVITY

POST 1

Hello admin, recently I noticed some of my wallpaper received suspicious commments.
The commentators will leave comments or links and the links will lead to some suspicious website.
Can you check this things?

this is some of the wallpaper that received suspicious comments

http://www.showwallpaper.com/show.php?wid=063546

http://www.showwallpaper.com/show.php?wid=061762

http://www.showwallpaper.com/show.php?wid=093190
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POST 2

I also noticed my wallpaper will pop up at 'NEW COMMENT' section even it didn't received new comments
this concern me since I never experience this thing.
is wallpaper here being hotlinking to other website?

Thank you
hope to hear news from you
and thank you so much for your hard work on this website =)