This seemed to come up at a good time, I was complaining about the 'local' online ads on Thursday. I've been looking around for a particular old frame or complete bike and keep coming across people who don't specify the size, or any relevant details about the bike. I don't know if they are trying to judge interest in their ad by leaving out details so that people e-mail them, but it is really frustrating.
The bike I'm currently looking at is out of town, so I want as much detail as possible without having to travel to see it, just to find out that it isn't what I expect. They list what the brakes are and show pictures, but none of the pictures show the drivetrain. I e-mailed asking for the size as well as other questions regarding other parts on the bike, and the response was that they didn't know about bikes, as the bike was given to them, so I ended up sending a modified picture of the bike from their ad showing where to take measurements and what area on the other side of the bike to take a picture of. Normally I would just pass by the ad and move on to something that has the relevant information/pictures. I'm sure transactions would take less time or be more successful if the information was there in the first place.