In addition, there are no guarantees that the current rate will be maintained, since many studies have shown the likelihood of a higher rate of sea level rise as global warming continues. (mashable.com)
If it is net negative then explaining the observed rate of sea level rise is problematic. (realclimate.org)
Human contribution so far to sea level rise does not seem particularly significant, given the early 20th century rate of sea level rise is about the same as the current rate. (dotearth.blogs.nytimes.com)