Ability To Merge/Split Lists 4

Yet another suggestion that isn't pressing, but I can see where the ability to merge or split lists could be very beneficial. I'm sure that some weblists eventually don't have as many items as originally envisioned, so merging with a similar list may be in order. Merging duplicate weblists created by separate members could also preserve some of the existing comments and ratings. To keep the site clean, there shouldn't be duplicate lists, but merging is certainly better than simply deleting one of them. On the other hand, a list may become too large or could benefit by splitting them into two separate lists (e.g. by time periods, genre, etc). For instance, my list of Smiths and Morrissey songs may one day be better split.