I've known for a while that you can use a custom domain with them, never tested it out until yesterday. They actually have some pretty good templates now that you can use and with some tweaks and minor optimization a site can look pretty good. I've found that with google photo setting changed to the high quality from original that google offers an unlimited amount of storage for photos. With up to 100 blogspot blogs allowed it seems like it has a lot of value if you use all 100 spots up for domains.100 domains could easily get in the multi terabyte range of bandwidth a month. Average page size is about 2.3MB now, so at at just 4 pages per visitor average and 100 visitors a day average per site. It would use around 92GB/day or 2.7TB a month, and that seems just on the low end. It's not the solution for every type of site, and eventually some of the websites with blogger may have to be upgraded to offer an even better experience for users. But for some projects it seems better than getting a vps/dedi to host 100 domains on.