I haven't seriously collected comics for many years. Probably not since the late 1980s. I've got many boxes filled with comics most of which I want to eventually sell, giveaway or possibly trade. Anyway like with some of my other hobbies I figured there was probably some sort of online "collection tracker" site. I was right.
The first place I checked out I had found from some chat forum that was the result of something I had been looking for or possibly a sidetracked idea from an Ebay search. Anyway I found comicspriceguide.com.
Library Thing, which is why I use Good Reads.
OK so then I found another site that looks a bit more promising for us cheap guys.
stashmycomics.com is also a free to use site. It has some forums, and it also has a way to find out the prices of your comics but it is not as accessible as the comicpriceguide prices were. There the prices are shown in the list view of your books, at stashmycomics you have to click on to the specific issue to get a full detailed page with pricing info. I think I can live with that even though the site title makes me think I'm hiding my collection from my mom in the basement.