Just a test, to see if this is possible in vb4 too (edit: does!).
source: zok from #chat on irc.vbirc.com, vbfans.com team
risk: potential DoS (seo rewrite-rewrite to itself), querying non-cached forum elements posting this in a busy thread, etc.
fix: local cache for x hours locally, or better; verify image is an image
disclaimer: my example link is innocent, nobody gets hax0r3d. This issue is not limited or specific to vBulletin. Affects v3 & v4 though.
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