The homepage for aspell is now help/aspell.net .Probably nice to change the ebuilds.
um, I just went to http://aspell.net which seems to be still the homepage, and there is no note on there about a new website..
Created attachment 14001 [details, diff] patch to resolve it. Here's the patch.
Sorry... the patch is for /usr/portage/eclass/aspell-dict.eclass and it changes the URL from http://www.gnu.org/projects/aspell/index.html, which is invalid, to the correct one http://aspell.net/
real problem here seemant, the old link in the eclass gives a 404 i fixed the eclass