This message - possibly generated by IE7's "is this site safe" site scanning factilities - means that somoene somewhere in the entire synthzone site - not just this forum - has posted, a link to mediaplex.

As Bill says, this is not a problem with synthzone as such; it is up to individuals what information they place in their postings and up to the reader of the post as to whether they follow such a link.

This type of warning is given because some websites may automatically forward you to other websites without you doing anything, so you could end up somewhere "undesireable" without any concious action.