I frequently check the LFG listings in order to find games I might be interested in joining, and am always frustrated by having to scroll past the same dozens of listings I've already looked at and decided aren't for me. I'd really appreciate being able to choose to hide certain listings that I've already looked at, so that in future searches of the LFG forums those listings will no longer come up. I believe that this addition would make it far easier for searchers to find campaigns they want to join, and is a generally useful quality of life change for LFG browsing. In addition, or possibly alternatively if the former idea is somehow impossible, an option to search for listings based on date posted would help solve the same problems.