I just remembered 3 awkward ( and true ) moments:
1. Local rav was sitting shiva. While I was there making a shiva call, two charity collectors came in. Ultimately, the rav , who didnt know them, asked if they knew his father. They said no, they just wanted him to sign a letter authorizing them to collect in the community . The rav politely refused.
2. A friend was sitting shiva at his parent’s home in Far Rockaway. He couldn’t believe the number of real estate agents who used shiva as an excuse to gain early entry and view the house. Some actually gave him their business card
3. Another friend ,about 5 years ago, was sitting shiva for his mother ( his father sat with him ). About 5 women visitors who neither knew were shadchanim using shiva to check out his father