Molly, I checked out a lot of stores when I first started listing too. I found it a great way to learn how to make a store on this site. The most difficult thing for me was to figure out what to do about shipping. It is easy if you can just do a flat rate but some things I can't. I use the calculator on those things and tell people to just put the weight in that I have in my description. After playing with the calculator I noticed that the seller and buyer's zip code are automatically put on it already. On those items I don't check the box with direct pay so that I can send the invoice. Of course, I haven't had a sale on one of those items yet so I am waiting to see if it works out okay.
As far as viewing who's online, I love that feature here. I think Yahoo slurp lives here. There are always bots of some kind on the list and it is great knowing they are doing something with our listings and our stores. They even check out our blogs and feedback. I find it very helpful to know what things people are looking at and have an interest in. I often click on an item being looked out to see what it is. There are always alot of visitors here which are either looking to buy or maybe looking the site over to join.