Parked Domains and SEO

[XLeezardx]

The company I work for has 5 websites total. 1 of them is the main one. The other 4 are on seperate webhost accounts and they all are just redirects to the main website. If I migrated those other 4 websites to the main website as parked domains. This move would cut cost 80% for the company and would make things alot easier to manage. Im not sure why we have 5 seperate webhost accounts for each website, but I assume its for SEO. So, would migrating all websites under 1 webhost account be a good move? Would setting them up as parked domains have a big effect on SEO? Remember, those other 4 websites were just redirects to 1 main website.

 

[MikeTrike]

Do you have a host that allows multi-site hosting for your domains? That way you could have all five sites up, but the others with links and redirects to the main, but still having content to help search ranking.

Just a thought