Both sides have their cons:
1. The requester sometimes make outrageous requests, such as asking for serious one word.com's for pennies. And sometimes put examples of the bad one worders they don't want. No one currently in mind, so don't take offense.
2. The requester sometimes expects a quality name for peanuts. But sometimes a quality name is offered at the budgets max, like say $400. Now the requester may get upset thinking that someone is submitting a name for that price because it's on the high end of their budget. When sometimes in reality, a seller is sacrificing by selling the name that low. In any other situation the name may be sold for 4 figures. I remember getting MrSmile.com for low to mid xxx and i sold it for 6k. Every name is different.
3. However, I also requested names in the distant past and i remember many submissions were not even of the same subject i requested. It's like people were just throwing out names trying to sell regardless. So If I said I wanted two word names with the keywords brand and media alone in it. Somehow people would send names like polioritis, traveltozinzane.com, all kinds of unrelated stuff and nonsense at that.
4. Only Nampros can stop intentionally bad submissions, by actually having a clear consequence. No excuses. For requesters, there's not much we can do...simply know better and and just ignore the post.