For Sale Signs

Our HOA CC&R's allow legitimate "For Sale" signs and "Take One" brochure tubes affixed to those signs, in the front and/or side yards of properties. Signs placed at the "entrance" to the community are not permitted since this falls into the "common area" or on the county right of way. Placement of signs are prohibited in the common areas and prohibited on county right of ways by local law. If I understand your dilemma, the signs of which you speak are beginning to "collect" in an area near the entrance/exits to indicate properties are for sale within the community. Check your CC&R's for common areas and with the county for restrictions if the areas are within the county right of way. The BOD can have common area signs removed without notice and the county will remove any signs in their right of way if they are reported.

If you were not living in an enclosed community you would not give a darn if those for sale signs were in the front yard of someone wanting to sell their property.
But when they are grouped at the entrance to your closed community it is easy to see why it might create the impression that "there's something wrong here".
We have a size restriction on our for sale signs which is pretty well adhered to by local realtors and the fact that the signs are permitted on the property for sale rather than at the complex entrances creates a better impression than group signs.