Arquivo.pt main goal is the preservation and access of web contents that are no longer available online. During the developing of the PWA IR (information retrieval) system we faced limitations in searching speed, quality of results, scalability and usability. To cope with this, we modified the archive-access project (http://archive-access.sourceforge.net/) to support our web archive IR requirements. Nutchwax, Nutch and Wayback’s code were adapted to meet the requirements. Several optimizations were added, such as simplifications in the way document versions are searched and several bottlenecks were resolved. The PWA search engine is a public service at http://archive.pt and a research platform for web archiving. As it predecessor Nutch, it runs over Hadoop clusters for distributed computing following the map-reduce paradigm. Its major features include fast full-text search, URL search, phrase search, faceted search (date, format, site), and sorting by relevance and date. The PWA search engine is highly scalable and its architecture is flexible enough to enable the deployment of different configurations to respond to the different needs. Currently, it serves an archive collection searchable by full-text with 180 million documents ranging between 1996 and 2010.
Simply adding the new links to the footer makes it unbalanced, now the columns are of different sizes:
You can check it on dev.arquivo.pt
We should either be replacing old footer links with these new ones, or adding additional ones to the other columns so all 4 columns have the same number of entries.
dcgomes
commented
2 years ago 
VascoRatoFCCN
What is the URL that originated the issue? www.arquivo.pt sobre.arquivo.pt
What happened? Change www.arquivo.pt footer to be consistent with sobre.arquivo.pt, take notice to use the short links.
Screenshots
www.arquivo.pt (Francisco milestone)
sobre.arquivo.pt (Francisco milestone)