Of course you can also use pose data made for normal humans, just make allowances for the distortions inherent in anime style characters/models. Plus you can get specific references such as posing hands and even expressions. Almost all of these can be used by MMDers. There are literally thousands of references out there just related to anime characters, made primarily for people who want to learn or like to draw manga or anime style illustrations. The basic idea when using search terms is to narrow down the field of results by including words that define your specific area of interest. Alternatively use GOOGLE going that route use the image search to quickly view what's available and then use the advance search tools to narrow down or focus your search if necessary. Just use the DA search box to find them (it's in the top left side of the DA page). Deviantart itself is a huge resource for finding anime style pose references.
