I recently wrote a small update to SCCM Client Center by Roger Zander to make it possible to filter out advertisements from the list. For example if you have a Task Sequence advertised to all you clients with a lot of steps all those steps will be listed. But maybe those are not that interesting to your helpdesk so this gives them the option to filter those outs and they can also see that they have active filters.
Roger added this in version 2.0.3.5 of SCCM Client Center so you need to update to that (or newer) to see this feature.

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