The first set of photos in my gallery are for swap, ideally for one I may need (I need a lot so I don't have a list) but I will also swap for one of similar value.
Sometimes I do come online for a quick visit so I may show as online but might have gone offline not soon after, if I don't reply within 10/15 minutes i've likely not stuck around, but I will always try and reply to any MMs ASAP. (Better to MM than instant chat)