Hi Fishfinger and welcome to the groups!
A quick and easy way to prevent crawling and indexing of those URLs is
to use the robots.txt. For instance, you could use the following:
user-agent: *
disallow: /*utm_source=
disallow: /*utm_medium=
Note that this would not necessarily remove the current entries from
the index immediately - it would generally take a bit of time for that
to happen. Also keep in mind that not all search engines understand
wildcards (the *)in the robots.txt file, but at least the major ones
do.
Hope it helps!
John
