Wow, I must have been very lucky. My experience with Gumtree is so different to yours @ScottOKeefe.
I have been using Gumtree for years mainly to sell, but occasionally to buy as well. I haven't had a problem listing or editing, and nor have I had to re-enter information into fields.
It works well for a free product. Sometimes an item doesn't sell for a long time, and then I will have numerous items in one day. You never can tell. I just keep renewing the ad until it is sold, or I decide advertising that item is just a waste of time.
I have a reluctance to throw away stuff which is still good and can be utilized by someone else. We give some stuff away, and the good but inexpensive stuff we give to op shops. The more expensive/valuable items I try to sell through Gumtree.
I put fair prices on items, and have found being politely resolute weeds out many of the painful 'tyre kickers' and people who aren't willing to pay a 'reasonable' amount. Also, I always have:
=>No Holds. Cash sale with personal pickup only, thank you.<=
to make the handover a clear cut and simple process. First to come with cash, gets it!
In the past, many times people committed to coming, and never turned up leaving me waiting twiddling thumbs. Now, I will only give out my suburb and ask people to SMS me when they are heading over to be at our place at a negotiated time. Only then do I send them my address. This means there is a high probability they will turn up.
It is irksome to have to renew ads every fortnight, but that is a minor beef.
With this system I have managed to sell a lot of no longer used items, which makes the wife woman very happy. (The getting rid of stuff bit , not necessarily the money bit,)
I occasionally have time for garage sales which I find through GT, and have also searched for and found a few things we needed.
So all up, my experience of GT is good.