Today I've find, that =net-misc/clipgrab-3.4.9-r1 fails to search on youtube. Homepage said, that current version is 3.4.11. Renamed ebuild with the same patchset installs it. Please, update portage's version and remove broken obsolete version.
+*clipgrab-3.4.11 (23 May 2015) + + 23 May 2015; Michael Weber <xmw@gentoo.org> +clipgrab-3.4.11.ebuild: + Version bump (thanks Sergey S. Starikoff, bug 549654). +