Since no one seems to have mentioned it so far...
The basic problem here is greedy matching. The " .*" is a greedy match so " m%(<a href="http://dynamodata.*/a>)%g" will match exactly once, with " .*" matching everything between the first occurrence of " <a href="http://dynamodata" and the last occurrence of " /a>". If, as in this case, you want to match the first following occurrence of " /a>" you can use the non-greedy form " .*?". So,
@tags = $content =~ m%(<a href="http://dynamodata.*?/a>)%g;
should work (not tested, since I'm not at the right machine at the moment....)
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