Yes, it can by WMS/WFS combination. You display with WMS and use WFS to respond to clicks. Eg http://openlayers.org/dev/examples/getfeature-wfs.html but I have posted more detail many times on this list. This method is far faster. I use it to respond to point, polygon selects and to text search based on attributes. I use WMSGetFeatureInfo to respond to hover events. (no features =1 and returning GML) (eg see http://data.gns.cri.nz/pbe but it requires a free registration).
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